From 55f252c9f50e998f6bc3aadc7806f049f7443d21 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Mon, 27 May 2013 23:32:35 -0400 Subject: [PATCH] ext4: truncate_inode_pages() in orphan cleanup path Currently we do not tell mm to zero out tail of the page before truncate in orphan_cleanup(). This is ok, because the page should not be uptodate, however this may eventually change and I might cause problems. Call truncate_inode_pages() as precautionary measure. Thanks Jan Kara for pointing this out. Signed-off-by: Lukas Czerner Signed-off-by: Theodore Ts'o --- fs/ext4/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 94cc84db7c9a..c468560c8765 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2170,6 +2170,7 @@ static void ext4_orphan_cleanup(struct super_block *sb, jbd_debug(2, "truncating inode %lu to %lld bytes\n", inode->i_ino, inode->i_size); mutex_lock(&inode->i_mutex); + truncate_inode_pages(inode->i_mapping, inode->i_size); ext4_truncate(inode); mutex_unlock(&inode->i_mutex); nr_truncates++;