diff options
| author | Eryu Guan <guaneryu@gmail.com> | 2016-02-21 18:38:44 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-18 08:50:37 -0400 |
| commit | 31a37d7c7ef7b4f90b600fcddd1c385a39f9d34c (patch) | |
| tree | 876b0efa6cda395c772593a61c58f5ecef4308cb /fs | |
| parent | 3a4db9eef86e230e3b441ea14ab4ed5492b5bf02 (diff) | |
ext4: iterate over buffer heads correctly in move_extent_per_page()
[ Upstream commit 87f9a031af48defee9f34c6aaf06d6f1988c244d ]
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>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
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 7da8ac1047f8..3fb92abe5707 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -393,6 +393,7 @@ 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); |