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/super.c

@@ -924,6 +924,7 @@ restart:
 	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);