[GFS2] Use mutices rather than semaphores

As well as a number of minor bug fixes, this patch changes GFS
to use mutices rather than semaphores. This results in better
information in case there are any locking problems.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 75e9a3231b8f..c5984351e4d8 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -41,9 +41,9 @@ static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
 {
         unsigned int count;
 
-        down(&sdp->sd_freeze_lock);
+        mutex_lock(&sdp->sd_freeze_lock);
         count = sdp->sd_freeze_count;
-        up(&sdp->sd_freeze_lock);
+        mutex_unlock(&sdp->sd_freeze_lock);
 
         return sprintf(buf, "%u\n", count);
 }