From: Bob Peterson <rpeterso@redhat.com>
Date: Thu, 22 Mar 2012 12:58:30 +0000 (-0400)
Subject: GFS2: put glock reference in error patch of read_rindex_entry
X-Git-Tag: firefly_0821_release~3680^2~3106^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c1ac539ed43f273cd4d92bf7350ffd783b920184;p=firefly-linux-kernel-4.4.55.git

GFS2: put glock reference in error patch of read_rindex_entry

This patch fixes the error path of function read_rindex_entry
so that it correctly gives up its glock reference in cases where
there is a race to re-read the rindex after gfs2_grow.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 19bde40b4864..19354a20e5b1 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -640,6 +640,7 @@ static int read_rindex_entry(struct gfs2_inode *ip,
 		return 0;
 
 	error = 0; /* someone else read in the rgrp; free it and ignore it */
+	gfs2_glock_put(rgd->rd_gl);
 
 fail:
 	kfree(rgd->rd_bits);