[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.
Modified-by: Ingo Molnar <mingo@elte.hu>
(finished the conversion)
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 2ba11a9..e9a42c7 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1275,7 +1275,7 @@
size_t towrite = len;
struct buffer_head *bh;
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
while (towrite > 0) {
tocopy = sb->s_blocksize - offset < towrite ?
sb->s_blocksize - offset : towrite;
@@ -1297,7 +1297,7 @@
}
out:
if (len == towrite) {
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
return err;
}
if (inode->i_size < off+len-towrite)
@@ -1305,7 +1305,7 @@
inode->i_version++;
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
return len - towrite;
}