From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Sat, 10 Dec 2016 00:10:15 +0000 (-0800)
Subject: ocfs2: fix bad pointer cast
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=aef73a61c01a4dca3f26c22df05039f78fe9d468;p=openwrt%2Fstaging%2Fblogic.git

ocfs2: fix bad pointer cast

generic/188 triggered a dmesg stack trace because the dio completion
was casting a buffer head to an on-disk inode, which is whacky.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 3c531f108a21..3372d82d12b6 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -2317,7 +2317,7 @@ static int ocfs2_dio_end_io_write(struct inode *inode,
 			mlog_errno(ret);
 	}
 
-	di = (struct ocfs2_dinode *)di_bh;
+	di = (struct ocfs2_dinode *)di_bh->b_data;
 
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);