diff options
| author | Eryu Guan <guaneryu@gmail.com> | 2016-02-21 18:38:44 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-01 12:15:48 -0700 |
| commit | fa5613b1f39ec020671705453eeceaaf57459e49 (patch) | |
| tree | 59ad3f2810a91a48d81d029822c7f03a9f0419b6 /fs | |
| parent | eef1195bb671cd15d30df683bd0aca373943719e (diff) | |
ext4: iterate over buffer heads correctly in move_extent_per_page()
commit 6ffe77bad545f4a7c8edd2a4ee797ccfcd894ab4 upstream.
In commit bcff24887d00 ("ext4: don't read blocks from disk after extents
being swapped") bh is not updated correctly in the for loop and wrong
data has been written to disk. generic/324 catches this on sub-page
block size ext4.
Fixes: bcff24887d00 ("ext4: don't read blocks from disk after extentsbeing swapped")
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/move_extent.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 9bdbf98240a0..796ff0eafd3c 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -390,6 +390,7 @@ data_copy: *err = ext4_get_block(orig_inode, orig_blk_offset + i, bh, 0); if (*err < 0) break; + bh = bh->b_this_page; } if (!*err) *err = block_commit_write(pagep[0], from, from + replaced_size); |