[ 3.8.y.z extended stable ] Patch "eCryptfs: Check return of filemap_write_and_wait during fsync" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    eCryptfs: Check return of filemap_write_and_wait during fsync

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.3.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From b0f29967a3913f9fafed9d722828da2585cb32d2 Mon Sep 17 00:00:00 2001
From: Tyler Hicks <tyhicks at canonical.com>
Date: Tue, 4 Jun 2013 10:24:56 -0700
Subject: eCryptfs: Check return of filemap_write_and_wait during fsync

commit bc5abcf7e411b889f73ea2a90439071a0f451011 upstream.

Error out of ecryptfs_fsync() if filemap_write_and_wait() fails.

Signed-off-by: Tyler Hicks <tyhicks at canonical.com>
Cc: Paul Taysom <taysom at chromium.org>
Cc: Olof Johansson <olofj at chromium.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 fs/ecryptfs/file.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 4f9a25e..9d5dd5c 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -296,7 +296,12 @@ static int ecryptfs_release(struct inode *inode, struct file *file)
 static int
 ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
-	filemap_write_and_wait(file->f_mapping);
+	int rc;
+
+	rc = filemap_write_and_wait(file->f_mapping);
+	if (rc)
+		return rc;
+
 	return vfs_fsync(ecryptfs_file_to_lower(file), datasync);
 }

--
1.8.1.2