[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, 8 insertions, 8 deletions

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 7b5573946f19..c0352cf330a3 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -251,10 +251,10 @@ static int bh_get(struct gfs2_quota_data *qd)
         struct buffer_head *bh;
         int error;
 
-        down(&sdp->sd_quota_mutex);
+        mutex_lock(&sdp->sd_quota_mutex);
 
         if (qd->qd_bh_count++) {
-                up(&sdp->sd_quota_mutex);
+                mutex_unlock(&sdp->sd_quota_mutex);
                 return 0;
         }
 
@@ -276,7 +276,7 @@ static int bh_get(struct gfs2_quota_data *qd)
                 (bh->b_data + sizeof(struct gfs2_meta_header) +
                  offset * sizeof(struct gfs2_quota_change));
 
-        up(&sdp->sd_quota_mutex);
+        mutex_lock(&sdp->sd_quota_mutex);
 
         return 0;
 
@@ -285,7 +285,7 @@ static int bh_get(struct gfs2_quota_data *qd)
 
  fail:
         qd->qd_bh_count--;
-        up(&sdp->sd_quota_mutex);
+        mutex_unlock(&sdp->sd_quota_mutex);
         return error;
 }
 
@@ -293,14 +293,14 @@ static void bh_put(struct gfs2_quota_data *qd)
 {
         struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
 
-        down(&sdp->sd_quota_mutex);
+        mutex_lock(&sdp->sd_quota_mutex);
         gfs2_assert(sdp, qd->qd_bh_count);
         if (!--qd->qd_bh_count) {
                 brelse(qd->qd_bh);
                 qd->qd_bh = NULL;
                 qd->qd_bh_qc = NULL;
         }
-        up(&sdp->sd_quota_mutex);
+        mutex_unlock(&sdp->sd_quota_mutex);
 }
 
 static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp)
@@ -529,7 +529,7 @@ static void do_qc(struct gfs2_quota_data *qd, int64_t change)
         struct gfs2_quota_change *qc = qd->qd_bh_qc;
         int64_t x;
 
-        down(&sdp->sd_quota_mutex);
+        mutex_lock(&sdp->sd_quota_mutex);
         gfs2_trans_add_bh(ip->i_gl, qd->qd_bh, 1);
 
         if (!test_bit(QDF_CHANGE, &qd->qd_flags)) {
@@ -560,7 +560,7 @@ static void do_qc(struct gfs2_quota_data *qd, int64_t change)
                 slot_hold(qd);
         }
                         
-        up(&sdp->sd_quota_mutex);
+        mutex_unlock(&sdp->sd_quota_mutex);
 }
 
 /**