[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>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/quota.c b/fs/quota.c
index 612e04db4b93..d14d872646d4 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -168,7 +168,7 @@ static void quota_sync_sb(struct super_block *sb, int type)
         sync_blockdev(sb->s_bdev);
 
         /* Now when everything is written we can discard the pagecache so
-         * that userspace sees the changes. We need i_sem and so we could
+         * that userspace sees the changes. We need i_mutex and so we could
          * not do it inside dqonoff_sem. Moreover we need to be carefull
          * about races with quotaoff() (that is the reason why we have own
          * reference to inode). */
@@ -184,9 +184,9 @@ static void quota_sync_sb(struct super_block *sb, int type)
         up(&sb_dqopt(sb)->dqonoff_sem);
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
                 if (discard[cnt]) {
-                        down(&discard[cnt]->i_sem);
+                        mutex_lock(&discard[cnt]->i_mutex);
                         truncate_inode_pages(&discard[cnt]->i_data, 0);
-                        up(&discard[cnt]->i_sem);
+                        mutex_unlock(&discard[cnt]->i_mutex);
                         iput(discard[cnt]);
                 }
         }