diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2017-04-22 17:22:09 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-20 14:28:36 +0200 |
| commit | 9b2fb8ad5ba1b528e2f2927898403b0df40fd09b (patch) | |
| tree | 88963dbafe4f8abc1dba43db81d5a370d1aa5a10 /block | |
| parent | 884ba252f3f16c577d7e5f6996c3e73a834b19fe (diff) | |
block: fix blk_integrity_register to use template's interval_exp if not 0
commit 2859323e35ab5fc42f351fbda23ab544eaa85945 upstream.
When registering an integrity profile: if the template's interval_exp is
not 0 use it, otherwise use the ilog2() of logical block size of the
provided gendisk.
This fixes a long-standing DM linear target bug where it cannot pass
integrity data to the underlying device if its logical block size
conflicts with the underlying device's logical block size.
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-integrity.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-integrity.c b/block/blk-integrity.c index 319f2e4f4a8b..478f572cb1e7 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -412,7 +412,8 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE | template->flags; - bi->interval_exp = ilog2(queue_logical_block_size(disk->queue)); + bi->interval_exp = template->interval_exp ? : + ilog2(queue_logical_block_size(disk->queue)); bi->profile = template->profile ? template->profile : &nop_profile; bi->tuple_size = template->tuple_size; bi->tag_size = template->tag_size; |