[Cluster-devel] [GFS2 PATCH] gfs2: in signal_our_withdraw wait for unfreeze of _this_ fs only

[Bob Peterson <rpeterso@redhat.com>]

Hi,

Function signal_our_withdraw needs to work on file systems that have been
partially frozen. To do this, it called flush_workqueue(gfs2_freeze_wq).
This this wrong because it waits for *ALL* file systems to be unfrozen, not
just the one we're withdrawing from. It should only wait for the targetted
file system to be unfrozen. Otherwise it would wait until ALL file systems
are thawed before signaling the withdraw.

This patch changes signal_our_withdraw so it calls flush_work() for the target
file system's freeze work (only) to be completed.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
---
 fs/gfs2/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index 0fba3bf64189..a374397f4273 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -137,7 +137,7 @@ static void signal_our_withdraw(struct gfs2_sbd *sdp)
 	gfs2_glock_dq(&sdp->sd_jinode_gh);
 	if (test_bit(SDF_FS_FROZEN, &sdp->sd_flags)) {
 		/* Make sure gfs2_unfreeze works if partially-frozen */
-		flush_workqueue(gfs2_freeze_wq);
+		flush_work(&sdp->sd_freeze_work);
 		atomic_set(&sdp->sd_freeze_state, SFS_FROZEN);
 		thaw_super(sdp->sd_vfs);
 	} else {