From edb5ac8993e25143f6af1ab143843a65c52e2a15 Mon Sep 17 00:00:00 2001 From: Yongqiang Yang Date: Mon, 31 Oct 2011 18:04:38 -0400 Subject: [PATCH] ext4: let ext4_discard_partial_buffers handle unaligned range correctly As comment says, we should handle unaligned range rather than aligned one. This fixes a bug found by running xfstests #91. Signed-off-by: Yongqiang Yang --- fs/ext4/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5fcef98..de05e86 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3206,8 +3206,8 @@ int ext4_discard_partial_page_buffers_no_lock(handle_t *handle, * to be updated with the contents of the block before * we write the zeros on top of it. */ - if (!(from & (blocksize - 1)) || - !((from + length) & (blocksize - 1))) { + if ((from & (blocksize - 1)) || + ((from + length) & (blocksize - 1))) { create_empty_buffers(page, blocksize, 0); } else { /* -- 2.7.4