So far blk_rq_prep_clone() is only used for setup one underlying cloned request from dm-rq request. block intetrity can be enabled for both dm-rq and the underlying queues, so it is reasonable to clone rq's nr_integrity_segments. Also write_hint is from bio, it should have been cloned too.
So clone nr_integrity_segments and write_hint in blk_rq_prep_clone. Cc: John Garry <[email protected]> Cc: Bart Van Assche <[email protected]> Cc: Hannes Reinecke <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Mike Snitzer <[email protected]> Cc: [email protected] Signed-off-by: Ming Lei <[email protected]> --- block/blk-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block/blk-core.c b/block/blk-core.c index 7e4a1da0715e..91537e526b45 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1636,9 +1636,13 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src, rq->rq_flags |= RQF_SPECIAL_PAYLOAD; rq->special_vec = rq_src->special_vec; } +#ifdef CONFIG_BLK_DEV_INTEGRITY + rq->nr_integrity_segments = rq_src->nr_integrity_segments; +#endif rq->nr_phys_segments = rq_src->nr_phys_segments; rq->ioprio = rq_src->ioprio; rq->extra_len = rq_src->extra_len; + rq->write_hint = rq_src->write_hint; return 0; -- 2.25.2 -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
