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pre
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mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35> Char Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.5CharChar
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35> Char Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35> Char";
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5CharChar0, li.5CharChar0, div.5CharChar0
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.5CharCharChar
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char";
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char0, li.5Char0, div.5Char0
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5, li.5, div.5
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
layout-grid-mode:char;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.2, li.2, div.2
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2;
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.20, li.20, div.20
{mso-style-name:ͼ˵<EFBFBD><EFBFBD>2;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.21, li.21, div.21
{mso-style-name:<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.3CharCharCharCharChar, li.3CharCharCharCharChar, div.3CharCharCharCharChar
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char Char Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.3CharCharCharCharCharChar
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char Char Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char Char";
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.a2, li.a2, div.a2
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.110, li.110, div.110
{mso-style-name:"<22><>ʽ <20><><EFBFBD><EFBFBD> 1 + <20><><EFBFBD><EFBFBD>1";
margin-right:0cm;
margin-left:0cm;
text-align:center;
page-break-after:avoid;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
span.1Char
{mso-style-name:"<22><><EFBFBD><EFBFBD> 1 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 1";
font-weight:bold;}
p.22, li.22, div.22
{mso-style-name:"<22><>ʽ <20>б<EFBFBD> 2 + <20><><EFBFBD><EFBFBD>";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.23, li.23, div.23
{mso-style-name:<EFBFBD>б<EFBFBD>2;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.50, li.50, div.50
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.111, li.111, div.111
{mso-style-name:<EFBFBD><EFBFBD>ʽ11;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:21.0pt;
margin-bottom:.0001pt;
text-align:center;
text-indent:-21.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.12, li.12, div.12
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1;
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.13, li.13, div.13
{mso-style-name:ͼ˵<EFBFBD><EFBFBD>1;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.01, li.01, div.01
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>01;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:36.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.112, li.112, div.112
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>11;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:18.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.113, li.113, div.113
{mso-style-name:<EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD>11;
margin-top:7.8pt;
margin-right:0cm;
margin-bottom:7.8pt;
margin-left:0cm;
text-align:center;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.14, li.14, div.14
{mso-style-name:<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.3Char1, li.3Char1, div.3Char1
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char1";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.post1, li.post1, div.post1
{mso-style-name:<EFBFBD>ʼ<EFBFBD>post1;
margin:0cm;
margin-bottom:.0001pt;
text-align:right;
line-height:11.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.31, li.31, div.31
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>31;
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char1, li.5Char1, div.5Char1
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35> Char1";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5CharChar1, li.5CharChar1, div.5CharChar1
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char1";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char10, li.5Char10, div.5Char10
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char1";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.51, li.51, div.51
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>1;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.120, li.120, div.120
{mso-style-name:<EFBFBD><EFBFBD>ʽ12;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:21.0pt;
margin-bottom:.0001pt;
text-align:center;
text-indent:-21.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.02, li.02, div.02
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>02;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:36.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.121, li.121, div.121
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>12;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:18.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.122, li.122, div.122
{mso-style-name:<EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD>12;
margin-top:7.8pt;
margin-right:0cm;
margin-bottom:7.8pt;
margin-left:0cm;
text-align:center;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.3Char2, li.3Char2, div.3Char2
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char2";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.post2, li.post2, div.post2
{mso-style-name:<EFBFBD>ʼ<EFBFBD>post2;
margin:0cm;
margin-bottom:.0001pt;
text-align:right;
line-height:11.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.32, li.32, div.32
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>32;
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char2, li.5Char2, div.5Char2
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char2";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.52, li.52, div.52
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>2;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.3CharCharCharChar, li.3CharCharCharChar, div.3CharCharCharChar
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.130, li.130, div.130
{mso-style-name:<EFBFBD><EFBFBD>ʽ13;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:21.0pt;
margin-bottom:.0001pt;
text-align:center;
text-indent:-21.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.30, li.30, div.30
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3;
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.03, li.03, div.03
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>03;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:36.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.131, li.131, div.131
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>13;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:18.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.132, li.132, div.132
{mso-style-name:<EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD>13;
margin-top:7.8pt;
margin-right:0cm;
margin-bottom:7.8pt;
margin-left:0cm;
text-align:center;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.33, li.33, div.33
{mso-style-name:<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.3Char3, li.3Char3, div.3Char3
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char3";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.post3, li.post3, div.post3
{mso-style-name:<EFBFBD>ʼ<EFBFBD>post3;
margin:0cm;
margin-bottom:.0001pt;
text-align:right;
line-height:11.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.330, li.330, div.330
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>33;
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char20, li.5Char20, div.5Char20
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35> Char2";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5CharChar2, li.5CharChar2, div.5CharChar2
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char Char2";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.5Char3, li.5Char3, div.5Char3
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<D0A1><35> Char3";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.53, li.53, div.53
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>3;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.3Char, li.3Char, div.3Char
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char5";
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
line-height:9.0pt;
font-size:8.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.3CharChar5
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char5";
mso-style-link:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char";
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.54, li.54, div.54
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
line-height:9.0pt;
text-autospace:ideograph-numeric;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.24, li.24, div.24
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>2<EFBFBD>Ŵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.15, li.15, div.15
{mso-style-name:"<22><>ʽ <20><><EFBFBD><EFBFBD> 1 + <20><><EFBFBD><EFBFBD>";
margin-top:17.0pt;
margin-right:0cm;
margin-bottom:16.5pt;
margin-left:0cm;
text-align:center;
page-break-after:avoid;
font-size:22.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-weight:bold;}
p.25, li.25, div.25
{mso-style-name:"<22><>ʽ <20><><EFBFBD><EFBFBD> 2 + <20>о<EFBFBD>\: <20><><EFBFBD><EFBFBD><EFBFBD>о<EFBFBD>";
margin-top:13.0pt;
margin-right:0cm;
margin-bottom:13.0pt;
margin-left:28.9pt;
text-align:justify;
text-justify:inter-ideograph;
text-indent:-28.9pt;
page-break-after:avoid;
font-size:16.0pt;
font-family:"Arial","sans-serif";
font-weight:bold;}
span.2Char
{mso-style-name:"<22><><EFBFBD><EFBFBD> 2 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 2";
font-family:"Arial","sans-serif";
font-weight:bold;}
p.34, li.34, div.34
{mso-style-name:<EFBFBD>б<EFBFBD>3;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.35, li.35, div.35
{mso-style-name:<EFBFBD><EFBFBD>3;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.4, li.4, div.4
{mso-style-name:ͼ˵<EFBFBD><EFBFBD>4;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.40, li.40, div.40
{mso-style-name:<EFBFBD>б<EFBFBD>4;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:21.0pt;
margin-bottom:.0001pt;
text-align:center;
text-indent:-21.0pt;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.41, li.41, div.41
{mso-style-name:<EFBFBD><EFBFBD>4;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.55, li.55, div.55
{mso-style-name:ͼ˵<EFBFBD><EFBFBD>5;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.56, li.56, div.56
{mso-style-name:<EFBFBD>б<EFBFBD>5;
margin:0cm;
margin-bottom:.0001pt;
text-align:center;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.57, li.57, div.57
{mso-style-name:<EFBFBD><EFBFBD>5;
margin:0cm;
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span.Char3
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p.af4, li.af4, div.af4
{mso-style-name:<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>;
mso-style-link:"<22>ļ<EFBFBD><C4BC><EFBFBD> Char";
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margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char4
{mso-style-name:"<22>ļ<EFBFBD><C4BC><EFBFBD> Char";
mso-style-link:<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.af5, li.af5, div.af5
{mso-style-name:ѡ<EFBFBD><EFBFBD>;
mso-style-link:"ѡ<><D1A1> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char5
{mso-style-name:"ѡ<><D1A1> Char";
mso-style-link:ѡ<EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.af6, li.af6, div.af6
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char6
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.af7, li.af7, div.af7
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char7
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.af8, li.af8, div.af8
{mso-style-name:<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
mso-style-link:"<22>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char8
{mso-style-name:"<22>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:"Times New Roman","serif";}
p.af9, li.af9, div.af9
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Char9
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.58, li.58, div.58
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
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font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.59, li.59, div.59
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD>ſ<EFBFBD><EFBFBD><EFBFBD>;
margin:0cm;
margin-bottom:.0001pt;
layout-grid-mode:char;
font-size:9.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
p.926, li.926, div.926
{mso-style-name:"<22><>ʽ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> + <20><><EFBFBD>\: 9\.26 <20><><EFBFBD><EFBFBD>";
margin:0cm;
margin-bottom:.0001pt;
layout-grid-mode:char;
font-size:10.0pt;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.5Char4
{mso-style-name:"<22><><EFBFBD><EFBFBD> 5 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 5";
font-weight:bold;}
span.6Char0
{mso-style-name:"<22><><EFBFBD><EFBFBD> 6 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 6";
font-family:"Arial","sans-serif";
font-weight:bold;}
span.7Char
{mso-style-name:"<22><><EFBFBD><EFBFBD> 7 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 7";
font-weight:bold;}
span.8Char
{mso-style-name:"<22><><EFBFBD><EFBFBD> 8 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 8";
font-family:"Arial","sans-serif";}
span.9Char
{mso-style-name:"<22><><EFBFBD><EFBFBD> 9 Char";
mso-style-link:"<22><><EFBFBD><EFBFBD> 9";
font-family:"Arial","sans-serif";}
span.Chara
{mso-style-name:"<22><>ע<EFBFBD>ı<EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD>ı<EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Charb
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Charc
{mso-style-name:"ҳü Char";
mso-style-link:ҳü;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Chard
{mso-style-name:<><D2B3> Char";
mso-style-link:ҳ<EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Chare
{mso-style-name:"<22><><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.HTMLChar
{mso-style-name:"HTML Ԥ<><D4A4><EFBFBD>ʽ Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD> Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>1 Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>2 Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>3 Char";
mso-style-link:"HTML Ԥ<><D4A4><EFBFBD>ʽ\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>1\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>2\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>3";
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.Charf
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD><EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
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span.Charf0
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD>ı<EFBFBD> Char";
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>;
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
span.3CharChar1
{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char1";
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{mso-style-name:<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char3";
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<div class=WordSection1 style='layout-grid:15.6pt'>
<p class=ab><a name="_Toc53320645"><span style='font-family:<3A><><EFBFBD><EFBFBD>'><EFBFBD><EFBFBD><EFBFBD><EFBFBD></span><span
lang=EN-US>12-5 linux/fs/super.c</span></a></p>
<div class=a align=center style='text-align:center'><span lang=EN-US>
<hr size=4 width="100%" align=center>
</span></div>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>1</span></u> <b><i>/*</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>2</span></u> <b><i>&nbsp;*&nbsp;
linux/fs/super.c</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>3</span></u> <b><i>&nbsp;*</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>4</span></u> <b><i>&nbsp;*&nbsp;
(C) 1991&nbsp; Linus Torvalds</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>5</span></u> <b><i>&nbsp;*/</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>6</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>7</span></u> <b><i>/*</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>8</span></u> <b><i>&nbsp;*
super.c contains code to handle the super-block tables.</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp; <u><span style='color:blue'>9</span></u> <b><i>&nbsp;*/</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; /*</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp; * super.c</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD>
</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp; */</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>10</span></u>
#include &lt;linux/config.h&gt; // </span><EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ժ<EFBFBD>Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><span lang=EN-US>HD_TYPE</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>11</span></u>
#include &lt;linux/sched.h&gt;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȳ<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>task_struct</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD>й<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>úͻ<EFBFBD>ȡ<EFBFBD><EFBFBD>Ƕ<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>12</span></u>
#include &lt;linux/kernel.h&gt; // </span><EFBFBD>ں<EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD>ں˳<EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD>ζ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>13</span></u>
#include &lt;asm/system.h&gt;&nbsp;&nbsp; // </span>ϵͳͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>/</span><EFBFBD>ж<EFBFBD><EFBFBD>ŵȵ<EFBFBD>Ƕ<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>14</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>15</span></u>
#include &lt;errno.h&gt;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD>и<EFBFBD><EFBFBD>ֳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>16</span></u>
#include &lt;sys/stat.h&gt;&nbsp;&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ļ<EFBFBD>״̬ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ״̬<EFBFBD><span
lang=EN-US>stat{}</span><EFBFBD>ͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>17</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>豸ִ<EFBFBD>и<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>fs/buffer.c</span><EFBFBD><EFBFBD><span lang=EN-US>59</span><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>18</span></u> int
<u><span style='color:blue'>sync_dev</span></u>(int dev);</span></p>
<p class=a><span lang=EN-US>&nbsp; &nbsp;&nbsp;// </span><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>kernel/chr_drv/tty_io.c</span><EFBFBD><EFBFBD><span
lang=EN-US>140</span><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>19</span></u>
void <u><span style='color:blue'>wait_for_keypress</span></u>(void);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>20</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>21</span></u> <b><i>/*
set_bit uses setb, as gas doesn't recognize setc */</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; /* set_bit()</span>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>setb</span>ָ<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>gas</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><span
lang=EN-US>setc */</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>λƫ<EFBFBD>ƴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ظ<EFBFBD>ԭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λֵ<EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>test_bit()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ƕ<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>bitnr</span><EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD>λƫ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><span lang=EN-US>addr</span><EFBFBD>Dz<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // %0 - ax(__res)</span><EFBFBD><EFBFBD><span
lang=EN-US>%1 - 0</span><EFBFBD><EFBFBD><span lang=EN-US>%2 - bitnr</span><EFBFBD><EFBFBD><span lang=EN-US>%3
- addr</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>23</span><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>eax</span><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD>ڸ<EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD>ʺ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>24</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><span
lang=EN-US>bt </span><EFBFBD><EFBFBD><EFBFBD>ڶԱ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><EFBFBD>ԣ<EFBFBD><span lang=EN-US>Bit Test</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѵ<EFBFBD>ַ<span
lang=EN-US>addr</span><EFBFBD><EFBFBD><span lang=EN-US>%3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λƫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>bitnr</span><EFBFBD><EFBFBD><span lang=EN-US>%2</span><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>־<span
lang=EN-US>CF </span><EFBFBD>С<EFBFBD> ָ<><D6B8><span lang=EN-US>setb</span><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD>ݽ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>λ<EFBFBD><EFBFBD>־<span lang=EN-US>CF</span><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>%al</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>CF = 1</span><EFBFBD><EFBFBD><span lang=EN-US>%al = 1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>%al = 0</span><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>22</span></u>
#define <u><span style='color:blue'>set_bit</span></u>(bitnr,addr) ({ \</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>23</span></u>
register int __res __asm__(<i>&quot;ax&quot;</i>); \</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>24</span></u>
__asm__(<i>&quot;bt %2,%3;setb %%al&quot;</i>:<i>&quot;=a&quot;</i> (__res):<i>&quot;a&quot;</i>
(0),<i>&quot;r&quot;</i> (bitnr),<i>&quot;m&quot;</i> (*(addr))); \</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>25</span></u>
__res; })</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>26</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>27</span></u>
struct <u><span style='color:blue'>super_block</span></u> <u><span
style='color:blue'>super_block</span></u>[<u><span style='color:blue'>NR_SUPER</span></u>];&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>NR_SUPER = 8</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>28</span></u> <b><i>/*
this is initialized in init/main.c */</i></b></span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; /* ROOT_DEV</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>init/main.c</span><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><span lang=EN-US> */</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>29</span></u> int
<u><span style='color:blue'>ROOT_DEV</span></u> = 0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>š<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>30</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>lock_super()</span><EFBFBD><EFBFBD><span lang=EN-US>free_super()</span><EFBFBD><EFBFBD><span
lang=EN-US>wait_on_super()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>inode.c</span><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<span lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><EFBFBD>󻻳<EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򽫵<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϵĵȴ<EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>s_wait</span><EFBFBD>С<EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD>ػ<EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>31</span></u>
static void <u><span style='color:blue'>lock_super</span></u>(struct <u><span
style='color:blue'>super_block</span></u> * sb)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>32</span></u> {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>33</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>cli</span></u>();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD>жϡ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>34</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
while (sb-&gt;s_lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˯<EFBFBD>ߵȴ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>35</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>sleep_on</span></u>(&amp;(sb-&gt;s_wait));&nbsp;&nbsp;&nbsp;&nbsp;
// kernel/sched.c</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>199</span><EFBFBD>С<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>36</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
sb-&gt;s_lock = 1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>37</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>sti</span></u>();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD>жϡ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>38</span></u> }</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>39</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD>ػ<EFBFBD><EFBFBD>ѵȴ<EFBFBD><EFBFBD>ڴ˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>s_wait</span><EFBFBD>ϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>н<EFBFBD><EFBFBD>̡<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><span lang=EN-US>ulock_super</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>40</span></u>
static void <u><span style='color:blue'>free_super</span></u>(struct <u><span
style='color:blue'>super_block</span></u> * sb)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>41</span></u> {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>42</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>cli</span></u>();</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>43</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
sb-&gt;s_lock = 0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>44</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>wake_up</span></u>(&amp;(sb-&gt;s_wait));&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD>ѵȴ<EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľ<EFBFBD><EFBFBD>̡<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>45</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>sti</span></u>();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// wake_up()</span><EFBFBD><EFBFBD><span lang=EN-US>kernel/sched.c</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>188</span><EFBFBD>С<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>46</span></u> }</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>47</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span>˯<EFBFBD>ߵȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򽫵<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϵĵȴ<EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵȴ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>s_wait</span><EFBFBD>С<EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD>ػ<EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>48</span></u>
static void <u><span style='color:blue'>wait_on_super</span></u>(struct <u><span
style='color:blue'>super_block</span></u> * sb)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>49</span></u> {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>50</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>cli</span></u>();</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>51</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
while (sb-&gt;s_lock)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˯<EFBFBD>ߵȴ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>52</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>sleep_on</span></u>(&amp;(sb-&gt;s_wait));</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>53</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>sti</span></u>();</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>54</span></u> }</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>55</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span>ȡָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD>򷵻س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp; &nbsp;&nbsp;// </span><EFBFBD><EFBFBD><EFBFBD>򷵻ؿ<EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>56</span></u>
struct <u><span style='color:blue'>super_block</span></u> * <u><span
style='color:blue'>get_super</span></u>(int dev)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>57</span></u> {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>58</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
struct <u><span style='color:blue'>super_block</span></u> * s;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//
s</span><EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽṹָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>59</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>0</span><EFBFBD>򷵻ؿ<EFBFBD>ָ<EFBFBD>롣Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>s</span>ָ<EFBFBD>򳬼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><20><><span lang=EN-US>62</span><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ֵ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>&quot;s
= 0+super_block&quot; </span><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD> <span lang=EN-US>&quot;s = super_block&quot;</span><EFBFBD><EFBFBD><span
lang=EN-US>&quot;s = &amp;super_block[0]&quot;</span><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>60</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!dev)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>61</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>62</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s = 0+<u><span style='color:blue'>super_block</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>63</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
while (s &lt; <u><span style='color:blue'>NR_SUPER</span></u>+<u><span
style='color:blue'>super_block</span></u>)</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȵȴ<EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵȴ<EFBFBD><EFBFBD>ڼ䣬<EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD>ܱ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD>˵ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¶Գ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD>ʱ<span
lang=EN-US>s</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>򳬼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>64</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (s-&gt;s_dev == dev) {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>65</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>wait_on_super</span></u>(s);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>66</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (s-&gt;s_dev == dev)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>67</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return s;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>68</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s = 0+<u><span style='color:blue'>super_block</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻ؿ<EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>69</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
} else</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>70</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s++;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>71</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>72</span></u> }</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>73</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD>ͷţ<EFBFBD><EFBFBD>Żأ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>s_dev=0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ռ<EFBFBD>õĸ<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>Ǹ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷŸó<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>74</span></u>
void <u><span style='color:blue'>put_super</span></u>(int dev)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>75</span></u> {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>76</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
struct <u><span style='color:blue'>super_block</span></u> * sb;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>77</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
int i;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>78</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ԺͺϷ<EFBFBD><EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ͳ<EFBFBD≯ı<EFBFBD><EFBFBD>ˣ<EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ս<EFBFBD>ɡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ء<EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻ء<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㻹û<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ء<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳж<EFBFBD>أ<EFBFBD><span
lang=EN-US>umount</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // s_imount</span><EFBFBD><EFBFBD><EFBFBD>ȱ<EFBFBD><EFBFBD>ó<EFBFBD><span
lang=EN-US>Null</span><EFBFBD>Ժ<EFBFBD>Ż<EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>192</span><EFBFBD>С<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>79</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (dev == <u><span style='color:blue'>ROOT_DEV</span></u>) {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>80</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>printk</span></u>(<i>&quot;root diskette changed:
prepare for armageddon\n\r&quot;</i>);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>81</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>82</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>83</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!(sb = <u><span style='color:blue'>get_super</span></u>(dev)))</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>84</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>85</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (sb-&gt;s_imount) {</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>86</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>printk</span></u>(<i>&quot;Mounted disk changed -
tssk, tssk\n\r&quot;</i>);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>87</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>88</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>øó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // s_dev </span>Ϊ<span
lang=EN-US>0</span><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>顣Ȼ<EFBFBD><EFBFBD><EFBFBD>ͷŸó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD>ڻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>õĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>I_MAP_SLOTS</span><EFBFBD><EFBFBD><span
lang=EN-US>Z_MAP_SLOTS</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>8</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڷֱ<EFBFBD>ָ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼռ<EFBFBD>õĴ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݱ<EFBFBD><EFBFBD>޸Ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰѻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ըó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ء<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>89</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>lock_super</span></u>(sb);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>90</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
sb-&gt;s_dev = 0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>91</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
for(i=0;i&lt;<u><span style='color:blue'>I_MAP_SLOTS</span></u>;i++)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>92</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>brelse</span></u>(sb-&gt;s_imap[i]);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>93</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
for(i=0;i&lt;<u><span style='color:blue'>Z_MAP_SLOTS</span></u>;i++)</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>94</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>brelse</span></u>(sb-&gt;s_zmap[i]);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>95</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free_super</span></u>(sb);</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>96</span></u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return;</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>97</span></u> }</span></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>98</span></u> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>ϵ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>ӷ<EFBFBD><EFBFBD>ظó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>϶<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;<u><span style='color:blue'>99</span></u>
static struct <u><span style='color:blue'>super_block</span></u> * <u><span
style='color:blue'>read_super</span></u>(int dev)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>100</span></u><span
lang=EN-US> {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>101</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>super_block</span></u> * s;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>102</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>buffer_head</span></u> * bh;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>103</span></u><span
lang=EN-US>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int i,block;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>104</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻ؿ<EFBFBD>ָ<EFBFBD>롣Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>ɸ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>йظ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ʧЧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧЧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ԭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>105</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!dev)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>106</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>107</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>check_disk_change</span></u>(dev);</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>ӷ<EFBFBD><EFBFBD>ظó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>(</span>Ҳ<EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD><span lang=EN-US>s_dev=0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>)</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>ռ<EFBFBD><EFBFBD><EFBFBD>򷵻ؿ<EFBFBD>ָ<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>108</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (s = <u><span
style='color:blue'>get_super</span></u>(dev))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>109</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return s;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>110</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (s = 0+<u><span
style='color:blue'>super_block</span></u> ;; s++) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>111</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (s &gt;= <u><span style='color:blue'>NR_SUPER</span></u>+<u><span
style='color:blue'>super_block</span></u>)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>112</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>113</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!s-&gt;s_dev)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>114</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
break;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>115</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD>󣬾ͽ<EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>ϵ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp; &nbsp;&nbsp;// </span><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD>ֶν<EFBFBD><EFBFBD>в<EFBFBD><EFBFBD>ֳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>116</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_dev = dev;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>dev</span><EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>117</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_isup = <u><span
style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>118</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_imount = <u><span
style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>119</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_time = 0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>120</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_rd_only =
0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>121</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_dirt = 0;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><span
lang=EN-US>bh</span>ָ<EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ڿ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ĵ<EFBFBD><span lang=EN-US>2</span><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><span
lang=EN-US>1</span><EFBFBD>ſ<EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̿飩<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp; &nbsp;// </span><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>s_dev=0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͽ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>ӻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷŴ<EFBFBD>Ŷ<EFBFBD>ȡ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ϣ<EFBFBD>ĸ<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>122</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>lock_super</span></u>(s);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>123</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(bh = <u><span
style='color:blue'>bread</span></u>(dev,1))) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>124</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_dev=0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>125</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free_super</span></u>(s);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>126</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return
<u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>127</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>128</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *((struct <u><span
style='color:blue'>d_super_block</span></u> *) s) =</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>129</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
*((struct <u><span style='color:blue'>d_super_block</span></u> *)
bh-&gt;b_data);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>130</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>brelse</span></u>(bh);</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǵ<EFBFBD><EFBFBD><span
lang=EN-US>dev</span><EFBFBD>ϵõ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>Բ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳħ<EFBFBD><EFBFBD><EFBFBD>ֶβ<EFBFBD><EFBFBD>ԣ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸð<EFBFBD><span
lang=EN-US>Linux</span><EFBFBD>ںˣ<EFBFBD>ֻ֧<EFBFBD><EFBFBD><span lang=EN-US>MINIX</span><EFBFBD>ļ<EFBFBD>ϵͳ<span lang=EN-US>1.0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ħ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0x137f</span><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>131</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (s-&gt;s_magic
!= <u><span style='color:blue'>SUPER_MAGIC</span></u>) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>132</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_dev = 0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>133</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free_super</span></u>(s);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>134</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>135</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ڴ泬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD>ռ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ֶ<EFBFBD><EFBFBD>С<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>2</span><EFBFBD>ſʼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><span lang=EN-US>s_imap_blocks</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ͼ<EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD>ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><span
lang=EN-US>s_zmap_blocks</span><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>136</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (i=0;i&lt;<u><span
style='color:blue'>I_MAP_SLOTS</span></u>;i++)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>137</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_imap[i] = <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>138</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (i=0;i&lt;<u><span
style='color:blue'>Z_MAP_SLOTS</span></u>;i++)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>139</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_zmap[i] = <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>140</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; block=2;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>141</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (i=0 ; i &lt;
s-&gt;s_imap_blocks ; i++)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>142</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (s-&gt;s_imap[i]=<u><span style='color:blue'>bread</span></u>(dev,block))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>143</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
block++;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>144</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
else</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>145</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
break;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>146</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (i=0 ; i &lt;
s-&gt;s_zmap_blocks ; i++)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>147</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (s-&gt;s_zmap[i]=<u><span style='color:blue'>bread</span></u>(dev,block))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>148</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
block++;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>149</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
else</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>150</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
break;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼӦ<EFBFBD><EFBFBD>ռ<EFBFBD>е<EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳλͼ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>ʧ<EFBFBD>ܡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ռ<EFBFBD>õĸ<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>151</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (block !=
2+s-&gt;s_imap_blocks+s-&gt;s_zmap_blocks) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>152</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
for(i=0;i&lt;<u><span style='color:blue'>I_MAP_SLOTS</span></u>;i++)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD>ͷ<EFBFBD>λͼռ<EFBFBD>õĸ<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>153</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>brelse</span></u>(s-&gt;s_imap[i]);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>154</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;for(i=0;i&lt;<u><span style='color:blue'>Z_MAP_SLOTS</span></u>;i++)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>155</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>brelse</span></u>(s-&gt;s_zmap[i]);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>156</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_dev=0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD>ͷ<EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>157</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free_super</span></u>(s);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>158</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>159</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>гɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>ĺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>Ѿ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ȫ<EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>0</span>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>Dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>õģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ォλͼ<EFBFBD>е<EFBFBD><span
lang=EN-US>1</span><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͱ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD>Է<EFBFBD>ֹ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣ͬ<EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>160</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
s-&gt;s_imap[0]-&gt;b_data[0] |= 1;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>161</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; s-&gt;s_zmap[0]-&gt;b_data[0]
|= 1;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>162</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>free_super</span></u>(s);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>163</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return s;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>164</span></u><span
lang=EN-US> }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>165</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span>ж<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>dev_name</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȸ<EFBFBD><EFBFBD>ݲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD>Ȼ<EFBFBD><EFBFBD>λ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>Σ<EFBFBD><EFBFBD>ͷų<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼռ<EFBFBD>õĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD><EFBFBD>豸ִ<EFBFBD>и<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ж<EFBFBD>ز<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD>򷵻<EFBFBD><span
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻س<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>166</span></u><span
lang=EN-US> int <u><span style='color:blue'>sys_umount</span></u>(char *
dev_name)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>167</span></u><span
lang=EN-US> {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>168</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>m_inode</span></u> * inode;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>169</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>super_block</span></u> * sb;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>170</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int dev;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>171</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD>š<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><span
lang=EN-US>i_zone[0]</span><EFBFBD>еġ<EFBFBD> <20>μ<EFBFBD><CEBC><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>namei.c</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>sys_mknod()</span><EFBFBD>Ĵ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>445</span><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ż<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><span
lang=EN-US>dev_i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>172</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(inode=<u><span
style='color:blue'>namei</span></u>(dev_name)))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>173</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>174</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dev =
inode-&gt;i_zone[0];</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>175</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!<u><span
style='color:blue'>S_ISBLK</span></u>(inode-&gt;i_mode)) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>176</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(inode);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// fs/inode.c</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>150</span><EFBFBD>С<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>177</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>ENOTBLK</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>178</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // OK</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>˵õ<EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD>ȡ<EFBFBD>õ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ж<EFBFBD>ظ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ܱ<EFBFBD>ж<EFBFBD>أ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>æ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>179</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>iput</span></u>(inode);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>180</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (dev==<u><span
style='color:blue'>ROOT_DEV</span></u>)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>181</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EBUSY</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>û<EFBFBD>а<EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㲢û<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>䰲װ<EFBFBD><EFBFBD>־</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // i_mount</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD> Ȼ<><C8BB><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>н<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ø<EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻<EFBFBD>æ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>182</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(sb=<u><span
style='color:blue'>get_super</span></u>(dev)) || !(sb-&gt;s_imount))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>183</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>184</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if
(!sb-&gt;s_imount-&gt;i_mount)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>185</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>printk</span></u>(<i>&quot;Mounted inode has
i_mount=0\n&quot;</i>);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>186</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (inode=<u><span
style='color:blue'>inode_table</span></u>+0 ; inode&lt;<u><span
style='color:blue'>inode_table</span></u>+<u><span style='color:blue'>NR_INODE</span></u>
; inode++)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>187</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (inode-&gt;i_dev==dev &amp;&amp; inode-&gt;i_count)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>188</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EBUSY</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD>Կ<EFBFBD>ʼʵʩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ز<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˡ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȸ<EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>İ<EFBFBD>װ<EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣Ȼ<EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD>װ<span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>ֶ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ϊ<EFBFBD>գ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ż<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ĸ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD>װϵͳ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>ָ<EFBFBD><EFBFBD>Ϊ<EFBFBD>ա<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>189</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
sb-&gt;s_imount-&gt;i_mount=0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>190</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>iput</span></u>(sb-&gt;s_imount);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>191</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sb-&gt;s_imount = <u><span
style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>192</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>iput</span></u>(sb-&gt;s_isup);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>193</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sb-&gt;s_isup = <u><span
style='color:blue'>NULL</span></u>;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><EFBFBD><EFBFBD>ϵij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD>λͼռ<EFBFBD>õĸ<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ը<EFBFBD><EFBFBD>豸ִ<EFBFBD>и<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD>󷵻<EFBFBD><span
lang=EN-US>0</span><EFBFBD><EFBFBD>ж<EFBFBD>سɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>194</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>put_super</span></u>(dev);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>195</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>sync_dev</span></u>(dev);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>196</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return 0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>197</span></u><span
lang=EN-US> }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>198</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>dev_name</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>dir_name</span><EFBFBD>ǰ<EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>rw_flag</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>Ŀ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>صĵط<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҷ<EFBFBD>Ӧ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>û<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD>á<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD>򷵻<EFBFBD><span
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򷵻س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>199</span></u><span
lang=EN-US> int <u><span style='color:blue'>sys_mount</span></u>(char *
dev_name, char * dir_name, int rw_flag)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>200</span></u><span
lang=EN-US> {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>201</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>m_inode</span></u> * dev_i, * dir_i;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>202</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>super_block</span></u> * sb;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>203</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int dev;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>204</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD>š<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><span
lang=EN-US>i_zone[0]</span><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD>ȡ<EFBFBD>õ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><span lang=EN-US>dev_i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>205</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(dev_i=<u><span
style='color:blue'>namei</span></u>(dev_name)))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>206</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>207</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dev =
dev_i-&gt;i_zone[0];</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>208</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!<u><span
style='color:blue'>S_ISBLK</span></u>(dev_i-&gt;i_mode)) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>209</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dev_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>210</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EPERM</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>211</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // OK</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>˵õ<EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD>ȡ<EFBFBD>õ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><span lang=EN-US>dev_i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ŀ¼<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD> <span lang=EN-US>dir_i</span><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>߸<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>Ľڵ<EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>Ľڵ<EFBFBD><EFBFBD><span
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㷵<EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ýڵ㲻<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>Ŀ¼<EFBFBD>ļ<EFBFBD><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>Ҳ<EFBFBD>Żظ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>ļ<EFBFBD>ϵͳֻ<EFBFBD>ܰ<EFBFBD>װ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>һ<EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>212</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>iput</span></u>(dev_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>213</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(dir_i=<u><span
style='color:blue'>namei</span></u>(dir_name)))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>214</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>215</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if
(dir_i-&gt;i_count != 1 || dir_i-&gt;i_num == <u><span style='color:blue'>ROOT_INO</span></u>)
{</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>216</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dir_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>217</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EBUSY</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>218</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>219</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!<u><span
style='color:blue'>S_ISDIR</span></u>(dir_i-&gt;i_mode)) {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>220</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dir_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>221</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EPERM</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>222</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ڰ<EFBFBD>װ<EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>ʼ<EFBFBD><EFBFBD>ȡҪ<EFBFBD><EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>Żظð<EFBFBD>װ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><span lang=EN-US>dir_i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>н<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>оʹ<EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>223</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(sb=<u><span
style='color:blue'>read_super</span></u>(dev))) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>224</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dir_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>225</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EBUSY</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>226</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ڵõ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD><EFBFBD>м<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>Ѿ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ط<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD>־<EFBFBD>Ѿ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣬Ҳ<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>227</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if
(sb-&gt;s_imount) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>228</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dir_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>229</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EBUSY</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>230</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>231</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;if
(dir_i-&gt;i_mount) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>232</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>iput</span></u>(dir_i);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>233</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return -<u><span style='color:blue'>EPERM</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>234</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ġ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㡱<EFBFBD>ֶ<EFBFBD>ָ<EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ð<EFBFBD>װλ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>İ<EFBFBD>װ<EFBFBD><EFBFBD>־<EFBFBD>ͽڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸ı<EFBFBD>־<EFBFBD><EFBFBD>Ȼ<EFBFBD>󷵻<EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>235</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
sb-&gt;s_imount=dir_i;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>236</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dir_i-&gt;i_mount=1;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>237</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dir_i-&gt;i_dirt=1;<b><i>/*
NOTE! we don't iput(dir_i) */</i></b> /*</span>ע<EFBFBD><EFBFBD><span lang=EN-US>!</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><span
lang=EN-US>iput(dir_i)*/</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>238</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return
0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b><i>/* we do that in umount */</i></b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/* </span><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>umount</span><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US> */</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>239</span></u><span
lang=EN-US> }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>240</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; //// </span><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>file_table[]</span><EFBFBD>ͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㡣 <20><><EFBFBD>ͳ<EFBFBD>Ʋ<EFBFBD><C6B2><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ϵͳ<EFBFBD>ϵĿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<CFB5><CDB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>г<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>sys_setup()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><span
lang=EN-US>blk_drv/hd.c</span><EFBFBD><EFBFBD><span lang=EN-US>157</span><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>241</span></u><span
lang=EN-US> void <u><span style='color:blue'>mount_root</span></u>(void)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>242</span></u><span
lang=EN-US> {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>243</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int i,<u><span
style='color:blue'>free</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>244</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>super_block</span></u> * p;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>245</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; struct <u><span
style='color:blue'>m_inode</span></u> * mi;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>246</span></u><span
lang=EN-US> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>32</span><EFBFBD>ֽڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڷ<EFBFBD>ֹ<EFBFBD>޸Ĵ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>247</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (32 != sizeof
(struct <u><span style='color:blue'>d_inode</span></u>))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>248</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>panic</span></u>(<i>&quot;bad i-node size&quot;</i>);</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ȳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>64</span><EFBFBD><EFBFBD><EFBFBD>ϵͳͬʱֻ<EFBFBD>ܴ<EFBFBD><span lang=EN-US>64</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶγ<EFBFBD>ʼ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̵Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>̣<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>249</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for(i=0;i&lt;<u><span
style='color:blue'>NR_FILE</span></u>;i++)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>250</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>file_table</span></u>[i].f_count=0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>251</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (<u><span
style='color:blue'>MAJOR</span></u>(<u><span style='color:blue'>ROOT_DEV</span></u>)
== 2) {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>̡<EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>252</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>printk</span></u>(<i>&quot;Insert root floppy and
press ENTER&quot;</i>);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>253</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>wait_for_keypress</span></u>();</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>254</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>255</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for(p = &amp;<u><span
style='color:blue'>super_block</span></u>[0] ; p &lt; &amp;<u><span
style='color:blue'>super_block</span></u>[<u><span style='color:blue'>NR_SUPER</span></u>]
; p++) {</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>256</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p-&gt;s_dev
= 0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>257</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
p-&gt;s_lock = 0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>258</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
p-&gt;s_wait = <u><span style='color:blue'>NULL</span></u>;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>259</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>ʼ<EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǴӸ<EFBFBD><EFBFBD><EFBFBD>϶<EFBFBD>ȡ<EFBFBD>ļ<EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ĸ<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ㣨<span lang=EN-US>1</span><EFBFBD>Žڵ㣩<EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD>ϳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܻ<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD>ͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>260</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(p=<u><span
style='color:blue'>read_super</span></u>(<u><span style='color:blue'>ROOT_DEV</span></u>)))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>261</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>panic</span></u>(<i>&quot;Unable to mount
root&quot;</i>);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>262</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (!(mi=<u><span
style='color:blue'>iget</span></u>(<u><span style='color:blue'>ROOT_DEV</span></u>,<u><span
style='color:blue'>ROOT_INO</span></u>)))&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
// </span><EFBFBD><EFBFBD><span lang=EN-US>fs.h</span><EFBFBD><EFBFBD><span lang=EN-US>ROOT_INO</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>1</span><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>263</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>panic</span></u>(<i>&quot;Unable to read root
i-node&quot;</i>);</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǶԳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͸<EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD><EFBFBD>Ѹ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>3</span><EFBFBD>Ρ<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>266</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˸<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>iget() </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
lang=EN-US>1</span><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD>øó<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>ͱ<EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>ֶ<EFBFBD>Ϊ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵ĵ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>͸<EFBFBD>Ŀ¼<span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>1</span><EFBFBD>Ž<EFBFBD><EFBFBD>̣<EFBFBD><span lang=EN-US>init</span><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span
lang=EN-US style='color:blue'>264</span></u><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
mi</span><span lang=EN-US>-&gt;i_count += 3 ;&nbsp;&nbsp;&nbsp; <b><i>/* NOTE!
it is logically used 4 times, not 1 */</i></b> </span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/* </span>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD>Ͻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>4</span><EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>1</span><EFBFBD><EFBFBD><span
lang=EN-US> */</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>265</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; p-&gt;s_isup =
p-&gt;s_imount = mi;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>266</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>current</span></u>-&gt;pwd = mi;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>267</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>current</span></u>-&gt;root = mi;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǶԸ<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ϵ<EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD>ͳ<EFBFBD>ƹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD>Ƹ<EFBFBD><EFBFBD><EFBFBD>Ͽ<EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>Ƴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>set_bit()</span>ֻ<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><span lang=EN-US>&quot;</span><span
lang=EN-US>i&amp;8191&quot; </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ȡ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>ǰλͼ<EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>Ӧ<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>λƫ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><span
lang=EN-US>&quot;</span><span lang=EN-US>i&gt;&gt;13&quot; </span><EFBFBD>ǽ<EFBFBD><span
lang=EN-US>i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>8192</span><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>̿<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>268</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>free</span></u>=0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>269</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i=p-&gt;s_nzones;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>270</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while (-- i &gt;=
0)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>271</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!<u><span style='color:blue'>set_bit</span></u>(i&amp;8191,p-&gt;s_zmap[i&gt;&gt;13]-&gt;b_data))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>272</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free</span></u>++;</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>/</span><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͽ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>+1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>1</span><EFBFBD>ǽ<EFBFBD><span
lang=EN-US>0</span><EFBFBD>ڵ<EFBFBD>Ҳͳ<EFBFBD>ƽ<EFBFBD>ȥ<EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>λ</p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span>ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>Ͽ<EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
lang=EN-US>i</span></p>
<p class=a><span lang=EN-US>&nbsp;&nbsp;&nbsp; // </span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
<p class=a><u><span lang=EN-US style='color:blue'>273</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>printk</span></u>(<i>&quot;%d/%d free blocks\n\r&quot;</i>,<u><span
style='color:blue'>free</span></u>,p-&gt;s_nzones);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>274</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <u><span
style='color:blue'>free</span></u>=0;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>275</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
i=p-&gt;s_ninodes+1;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>276</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while (-- i &gt;=
0)</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>277</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!<u><span style='color:blue'>set_bit</span></u>(i&amp;8191,p-&gt;s_imap[i&gt;&gt;13]-&gt;b_data))</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>278</span></u><span
lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<u><span style='color:blue'>free</span></u>++;</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>279</span></u><span
lang=EN-US>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<u><span
style='color:blue'>printk</span></u>(<i>&quot;%d/%d free inodes\n\r&quot;</i>,<u><span
style='color:blue'>free</span></u>,p-&gt;s_ninodes);</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>280</span></u><span
lang=EN-US> }</span></p>
<p class=a><u><span lang=EN-US style='color:blue'>281</span></u><span
lang=EN-US> </span></p>
<div class=a align=center style='text-align:center'><span lang=EN-US>
<hr size=4 width="100%" align=center>
</span></div>
<p class=MsoNormal><span lang=EN-US>&nbsp;</span></p>
<p class=MsoNormal><span lang=EN-US>&nbsp;</span></p>
</div>
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