From: Akira Fujita <a-fujita@rs.jp.nec.com>
Date: Sun, 6 Sep 2009 02:46:29 +0000 (-0400)
Subject: ext4: Return exchanged blocks count to user space in failure
X-Git-Tag: v2.6.32-rc1~633^2~24
X-Git-Url: http://ftp.safe.ca/?a=commitdiff_plain;h=8d6669133d8cdbb7cbe0e1f0f3744e7802a84afe;p=safe%2Fjmp%2Flinux-2.6

ext4: Return exchanged blocks count to user space in failure

Return exchanged blocks count (moved_len) to user space,
if ext4_move_extents() failed on the way.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 7050a9c..c1cdf61 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -243,10 +243,9 @@ setversion_out:
 					me.donor_start, me.len, &me.moved_len);
 		fput(donor_filp);
 
-		if (!err)
-			if (copy_to_user((struct move_extent *)arg,
-				&me, sizeof(me)))
-				return -EFAULT;
+		if (copy_to_user((struct move_extent *)arg, &me, sizeof(me)))
+			return -EFAULT;
+
 		return err;
 	}