From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 12 Apr 2014 16:45:25 +0000 (-0400)
Subject: ext4: use i_size_read in ext4_unaligned_aio()
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=fcc742c294c9c189e7040a3de8528ac6f8ee13ef;p=linux-edison.git

ext4: use i_size_read in ext4_unaligned_aio()

commit 6e6358fc3c3c862bfe9a5bc029d3f8ce43dc9765 upstream.

We haven't taken i_mutex yet, so we need to use i_size_read().

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index b19f0a457f3..4635788e14b 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -82,7 +82,7 @@ ext4_unaligned_aio(struct inode *inode, const struct iovec *iov,
 	size_t count = iov_length(iov, nr_segs);
 	loff_t final_size = pos + count;
 
-	if (pos >= inode->i_size)
+	if (pos >= i_size_read(inode))
 		return 0;
 
 	if ((pos & blockmask) || (final_size & blockmask))