Reenabled linux-xen and xen-image build

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.25 / patches.fixes / ext2_mtime_update_on_rename.diff

From: Jan Kara <jack@suse.cz>
Subject: [PATCH] ext2: Do not update mtime of a move directory when parent has not changed
References: bnc#493392
Patch-mainline: 2.6.30

If the parent of the moved directory has not changed, there's no real
reason to change mtime. Specs doesn't seem to say anything about this
particular case and e.g. ext3 does not change mtime in this case.
So we become a tiny bit more consistent.

Spotted by ronny.pretzsch@dfs.de, initial fix by Jörn Engel <joern@logfs.org>.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/ext2/namei.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -355,7 +355,10 @@ static int ext2_rename (struct inode * o
 	inode_dec_link_count(old_inode);
 
 	if (dir_de) {
-		ext2_set_link(old_inode, dir_de, dir_page, new_dir);
+		/* Set link only if parent has changed and thus avoid setting
+		 * of mtime of the moved directory on a pure rename. */
+		if (old_dir != new_dir)
+			ext2_set_link(old_inode, dir_de, dir_page, new_dir);
 		inode_dec_link_count(old_dir);
 	}
 	return 0;