add directory Linux-0.98

Linux-0.98/Yggdrasil-0.98.3/usr/include/linux/locks.h

@@ -0,0 +1,56 @@
+#ifndef _LINUX_LOCKS_H
+#define _LINUX_LOCKS_H
+
+/*
+ * Buffer cache locking - note that interrupts may only unlock, not
+ * lock buffers.
+ */
+extern void __wait_on_buffer(struct buffer_head *);
+
+extern inline void wait_on_buffer(struct buffer_head * bh)
+{
+	if (bh->b_lock)
+		__wait_on_buffer(bh);
+}
+
+extern inline void lock_buffer(struct buffer_head * bh)
+{
+	if (bh->b_lock)
+		__wait_on_buffer(bh);
+	bh->b_lock = 1;
+}
+
+extern inline void unlock_buffer(struct buffer_head * bh)
+{
+	bh->b_lock = 0;
+	wake_up(&bh->b_wait);
+}
+
+/*
+ * super-block locking. Again, interrupts may only unlock
+ * a super-block (although even this isn't done right now.
+ * nfs may need it).
+ */
+extern void __wait_on_super(struct super_block *);
+
+extern inline void wait_on_super(struct super_block * sb)
+{
+	if (sb->s_lock)
+		__wait_on_super(sb);
+}
+
+extern inline void lock_super(struct super_block * sb)
+{
+	if (sb->s_lock)
+		__wait_on_super(sb);
+	sb->s_lock = 1;
+}
+
+extern inline void unlock_super(struct super_block * sb)
+{
+	sb->s_lock = 0;
+	wake_up(&sb->s_wait);
+}
+
+#endif /* _LINUX_LOCKS_H */
+