diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2017-04-22 17:22:09 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-23 12:59:56 -0600 |
| commit | 2859323e35ab5fc42f351fbda23ab544eaa85945 (patch) | |
| tree | 40e05f23fc5a9bbae5d1a44e5935eaa30cbf0243 /block/blk-integrity.c | |
| parent | 659226eb630ff522b30d8b8a82c9e722756e6bd4 (diff) | |
| download | linux-0-day-2859323e35ab5fc42f351fbda23ab544eaa85945.tar.gz linux-0-day-2859323e35ab5fc42f351fbda23ab544eaa85945.tar.xz | |
block: fix blk_integrity_register to use template's interval_exp if not 0
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.
Cc: stable@vger.kernel.org
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>
Diffstat (limited to 'block/blk-integrity.c')
| -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 ce43a8214d3e9..0f891a9aff4d6 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; |