diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-verity-target.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index 4ef814a7faf4..182ce59763da 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -1023,6 +1023,14 @@ static void verity_io_hints(struct dm_target *ti, struct queue_limits *limits) limits->physical_block_size = 1 << v->data_dev_block_bits; blk_limits_io_min(limits, limits->logical_block_size); + + /* + * Similar to what dm-crypt does, opt dm-verity out of support for + * direct I/O that is aligned to less than the traditional direct I/O + * alignment requirement of logical_block_size. This prevents dm-verity + * data blocks from crossing pages, eliminating various edge cases. + */ + limits->dma_alignment = limits->logical_block_size - 1; } static void verity_dtr(struct dm_target *ti) |