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| author | Eryu Guan <guaneryu@gmail.com> | 2016-02-21 18:38:44 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-18 08:49:16 -0400 |
| commit | d3b9f52c79ea65d9256e7a49a1c9c259bae2bd68 (patch) | |
| tree | 523beabbf533f9638046757fe82e6bf84f2a80e5 /fs/ext4 | |
| parent | d14fefe00f42efae8471b4f48674bc5b4e5ed999 (diff) | |
| download | linux-stable-d3b9f52c79ea65d9256e7a49a1c9c259bae2bd68.tar.gz linux-stable-d3b9f52c79ea65d9256e7a49a1c9c259bae2bd68.tar.bz2 linux-stable-d3b9f52c79ea65d9256e7a49a1c9c259bae2bd68.zip | |
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/ext4')
| -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 165f309bafcc..f498c34b4688 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -397,6 +397,7 @@ 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); |