GFS2: Delete debugfs files only after we evict the glocks

This patch moves the call to gfs2_delete_debugfs_file so that it
comes after the glock hash table has been cleared. This way we
can query the debugfs files if umount hangs.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>

fs/gfs2/ops_fstype.c

@@ -1388,7 +1388,6 @@ static void gfs2_kill_sb(struct super_block *sb)
 	sdp->sd_root_dir = NULL;
 	sdp->sd_master_dir = NULL;
 	shrink_dcache_sb(sb);
-	gfs2_delete_debugfs_file(sdp);
 	free_percpu(sdp->sd_lkstats);
 	kill_block_super(sb);
 }

fs/gfs2/super.c

@@ -924,6 +924,7 @@ static void gfs2_put_super(struct super_block *sb)
 	gfs2_jindex_free(sdp);
 	/*  Take apart glock structures and buffer lists  */
 	gfs2_gl_hash_clear(sdp);
+	gfs2_delete_debugfs_file(sdp);
 	/*  Unmount the locking protocol  */
 	gfs2_lm_unmount(sdp);