[GFS2] don't try to lockfs after shutdown

If an fs has already been shut down, a lockfs callback should do nothing.
An fs that's been shut down can't acquire locks or do anything with
respect to the cluster.

Also, remove FIXME comment in withdraw function.  The missing bits of the
withdraw procedure are now all done by user space.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

2 files changed, 4 insertions, 7 deletions

diff --git a/fs/gfs2/lm.c b/fs/gfs2/lm.c
index effe4a337c1d..e30673dd37e0 100644
--- a/fs/gfs2/lm.c
+++ b/fs/gfs2/lm.c
@@ -104,15 +104,9 @@ int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
         vprintk(fmt, args);
         va_end(args);
 
-        fs_err(sdp, "about to withdraw from the cluster\n");
+        fs_err(sdp, "about to withdraw this file system\n");
         BUG_ON(sdp->sd_args.ar_debug);
 
-
-        fs_err(sdp, "waiting for outstanding I/O\n");
-
-        /* FIXME: suspend dm device so oustanding bio's complete
-           and all further io requests fail */
-
         fs_err(sdp, "telling LM to withdraw\n");
         gfs2_withdraw_lockproto(&sdp->sd_lockstruct);
         fs_err(sdp, "withdrawn\n");
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index 7685b46f934b..b2837839eed9 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -173,6 +173,9 @@ static void gfs2_write_super_lockfs(struct super_block *sb)
         struct gfs2_sbd *sdp = sb->s_fs_info;
         int error;
 
+        if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+                return;
+
         for (;;) {
                 error = gfs2_freeze_fs(sdp);
                 if (!error)