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| author | Yongqiang Yang <xiaoqiangnk@gmail.com> | 2011-11-01 02:04:38 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-11-01 02:04:38 +0400 |
| commit | edb5ac8993e25143f6af1ab143843a65c52e2a15 (patch) | |
| tree | d7ddf9603bcb2c540d5c240102a0dafc10f42eef | |
| parent | 5129d05fda57be13f434dbe8536de39a6c25496d (diff) | |
| download | linux-edb5ac8993e25143f6af1ab143843a65c52e2a15.tar.xz | |
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 <xiaoqiangnk@gmail.com>
| -rw-r--r-- | fs/ext4/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5fcef98f98e5..de05e86f1993 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 { /* |