3 files changed, 10 insertions, 0 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 6114571a979a..9d29a5167d34 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1526,6 +1526,7 @@ static void dump_glock_func(struct gfs2_glock *gl)
 
 void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
 {
+        set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags);
         glock_hash_walk(clear_glock, sdp);
         flush_workqueue(glock_workqueue);
         wait_event(sdp->sd_glock_wait, atomic_read(&sdp->sd_glock_disposal) == 0);
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index a46f03485936..a35ef5cd1480 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -539,6 +539,7 @@ enum {
         SDF_DEMOTE              = 5,
         SDF_NOJOURNALID         = 6,
         SDF_RORECOVERY          = 7, /* read only recovery */
+        SDF_SKIP_DLM_UNLOCK     = 8,
 };
 
 #define GFS2_FSNAME_LEN         256
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 0fb6539b0c8c..f6504d3fadb3 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -289,6 +289,14 @@ static void gdlm_put_lock(struct gfs2_glock *gl)
         gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT);
         gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT);
         gfs2_update_request_times(gl);
+
+        /* don't want to skip dlm_unlock writing the lvb when lock is ex */
+        if (test_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags) &&
+            gl->gl_state != LM_ST_EXCLUSIVE) {
+                gfs2_glock_free(gl);
+                return;
+        }
+
         error = dlm_unlock(ls->ls_dlm, gl->gl_lksb.sb_lkid, DLM_LKF_VALBLK,
                            NULL, gl);
         if (error) {