path: root/drivers/md/dm-integrity.c
diff options
authorMax Gurtovoy <maxg@mellanox.com>2019-09-16 18:44:29 +0300
committerJens Axboe <axboe@kernel.dk>2019-09-17 20:03:49 -0600
commit54d4e6ab91eb24b47a58403d8561206e916f0242 (patch)
tree3bd64c92b614284071d893012abcf01bfc55cabc /drivers/md/dm-integrity.c
parentblock: use symbolic constants for t10_pi type (diff)
block: centralize PI remapping logic to the block layer
Currently t10_pi_prepare/t10_pi_complete functions are called during the NVMe and SCSi layers command preparetion/completion, but their actual place should be the block layer since T10-PI is a general data integrity feature that is used by block storage protocols. Introduce .prepare_fn and .complete_fn callbacks within the integrity profile that each type can implement according to its needs. Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Suggested-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Fixed to not call queue integrity functions if BLK_DEV_INTEGRITY isn't defined in the config. Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm-integrity.c')
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 9118ab85cb3a..dab4446fe7d8 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -345,6 +345,14 @@ static void __DEBUG_bytes(__u8 *bytes, size_t len, const char *msg, ...)
#define DEBUG_bytes(bytes, len, msg, ...) do { } while (0)
+static void dm_integrity_prepare(struct request *rq)
+static void dm_integrity_complete(struct request *rq, unsigned int nr_bytes)
* DM Integrity profile, protection is performed layer above (dm-crypt)
@@ -352,6 +360,8 @@ static const struct blk_integrity_profile dm_integrity_profile = {
.name = "DM-DIF-EXT-TAG",
.generate_fn = NULL,
.verify_fn = NULL,
+ .prepare_fn = dm_integrity_prepare,
+ .complete_fn = dm_integrity_complete,
static void dm_integrity_map_continue(struct dm_integrity_io *dio, bool from_map);