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| author |   Eryu Guan <guaneryu@gmail.com> | 2016-02-21 18:38:44 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2016-03-09 21:37:53 -0500 |
| commit | 6ffe77bad545f4a7c8edd2a4ee797ccfcd894ab4 (patch) | |
| tree | 842dcd9b2f4a8d82df26d11e9c22779ec7b9894d | |
| parent | ext2, ext4: fix issue with missing journal entry in ext4_dax_mkwrite() (diff) | |
| download | linux-dev-6ffe77bad545f4a7c8edd2a4ee797ccfcd894ab4.tar.xz linux-dev-6ffe77bad545f4a7c8edd2a4ee797ccfcd894ab4.zip | |
ext4: iterate over buffer heads correctly in move_extent_per_page()
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>
| -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 e032a0423e35..4098acc701c3 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); |