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gfs2: Don't loop forever in gfs2_freeze if withdrawn

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Before this patch, function gfs2_freeze would loop forever if the
filesystem it tries to freeze is withdrawn. That's because function
gfs2_lock_fs_check_clean tries to enqueue the glock of the journal and
the gfs2_glock returns -EIO because you can't enqueue a journaled glock
after a withdraw.

Move the check for file system withdraw inside the loop so that the loop
can end when withdraw occurs.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Bob Peterson 2019-11-14 09:53:36 -05:00 committed by Andreas Gruenbacher
parent f155f5e010
commit 60528afa78
1 changed files with 5 additions and 5 deletions
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10
fs/gfs2/super.c
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@ -761,12 +761,12 @@ static int gfs2_freeze(struct super_block *sb)
if (atomic_read(&sdp->sd_freeze_state) != SFS_UNFROZEN)
goto out;
if (gfs2_withdrawn(sdp)) {
error = -EINVAL;
goto out;
}
for (;;) {
if (gfs2_withdrawn(sdp)) {
error = -EINVAL;
goto out;
}
error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh);
if (!error)
break;