3 files changed, 11 insertions, 1 deletions

diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 0a064e91ac70..81206e70cbf6 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -17,6 +17,7 @@
 #include <linux/buffer_head.h>
 #include <linux/rcupdate.h>
 #include <linux/rculist_bl.h>
+#include <linux/completion.h>
 
 #define DIO_WAIT        0x00000010
 #define DIO_METADATA    0x00000020
@@ -546,6 +547,7 @@ struct gfs2_sbd {
         struct gfs2_glock *sd_trans_gl;
         wait_queue_head_t sd_glock_wait;
         atomic_t sd_glock_disposal;
+        struct completion sd_locking_init;
 
         /* Inode Stuff */
 
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 8ac9ae189b53..2a77071fb7b6 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -72,6 +72,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
 
         init_waitqueue_head(&sdp->sd_glock_wait);
         atomic_set(&sdp->sd_glock_disposal, 0);
+        init_completion(&sdp->sd_locking_init);
         spin_lock_init(&sdp->sd_statfs_spin);
 
         spin_lock_init(&sdp->sd_rindex_spin);
@@ -1017,11 +1018,13 @@ hostdata_error:
                 fsname++;
         if (lm->lm_mount == NULL) {
                 fs_info(sdp, "Now mounting FS...\n");
+                complete(&sdp->sd_locking_init);
                 return 0;
         }
         ret = lm->lm_mount(sdp, fsname);
         if (ret == 0)
                 fs_info(sdp, "Joined cluster. Now mounting FS...\n");
+        complete(&sdp->sd_locking_init);
         return ret;
 }
 
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index e20eab37bc80..443cabcfcd23 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -338,6 +338,9 @@ static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
         rv = sscanf(buf, "%u", &first);
         if (rv != 1 || first > 1)
                 return -EINVAL;
+        rv = wait_for_completion_killable(&sdp->sd_locking_init);
+        if (rv)
+                return rv;
         spin_lock(&sdp->sd_jindex_spin);
         rv = -EBUSY;
         if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
@@ -414,7 +417,9 @@ static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
         rv = sscanf(buf, "%d", &jid);
         if (rv != 1)
                 return -EINVAL;
-
+        rv = wait_for_completion_killable(&sdp->sd_locking_init);
+        if (rv)
+                return rv;
         spin_lock(&sdp->sd_jindex_spin);
         rv = -EINVAL;
         if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)