From: Dmitri Monakhov <dmonakhov@openvz.org>
Date: Mon, 27 Oct 2008 20:01:49 +0000 (-0700)
Subject: ocfs2: truncate outstanding block after direct io failure
X-Git-Tag: upstream/snapshot3+hdmi~21565^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c435400140d24fbcb3da6b1e006be831f9056cb6;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

ocfs2: truncate outstanding block after direct io failure

Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Joel Becker <Joel.Becker@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 3138a38..e2570a3 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1866,6 +1866,13 @@ relock:
 		written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos,
 						    ppos, count, ocount);
 		if (written < 0) {
+			/*
+			 * direct write may have instantiated a few
+			 * blocks outside i_size. Trim these off again.
+			 * Don't need i_size_read because we hold i_mutex.
+			 */
+			if (*ppos + count > inode->i_size)
+				vmtruncate(inode, inode->i_size);
 			ret = written;
 			goto out_dio;
 		}