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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 /block/blk-integrity.c
parent5eaed68dd38c14907be2ce5a45c73a5f2acb75f4 (diff)
downloadlinux-54d4e6ab91eb24b47a58403d8561206e916f0242.tar.bz2
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 'block/blk-integrity.c')
-rw-r--r--block/blk-integrity.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index ca39b4624cf8..ff1070edbb40 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -368,10 +368,21 @@ static blk_status_t blk_integrity_nop_fn(struct blk_integrity_iter *iter)
return BLK_STS_OK;
}
+static void blk_integrity_nop_prepare(struct request *rq)
+{
+}
+
+static void blk_integrity_nop_complete(struct request *rq,
+ unsigned int nr_bytes)
+{
+}
+
static const struct blk_integrity_profile nop_profile = {
.name = "nop",
.generate_fn = blk_integrity_nop_fn,
.verify_fn = blk_integrity_nop_fn,
+ .prepare_fn = blk_integrity_nop_prepare,
+ .complete_fn = blk_integrity_nop_complete,
};
/**