diff mbox series

[4/6] block: call bio_integrity_unmap_free_user from blk_rq_unmap_user

Message ID 20240702151047.1746127-5-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [1/6] block: split integrity support out of bio.h | expand

Commit Message

Christoph Hellwig July 2, 2024, 3:10 p.m. UTC 
blk_rq_unmap_user always unmaps user space pass-through request.  If such
a request has integrity data attached it must come from a user mapping
as well.  Call bio_integrity_unmap_free_user from blk_rq_unmap_user
and remove the nvme_unmap_bio wrapper in the nvme driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Anuj Gupta <anuj20.g@samsung.com>
---
 block/bio-integrity.c     |  1 -
 block/blk-map.c           |  3 +++
 drivers/nvme/host/ioctl.c | 15 ++++-----------
 3 files changed, 7 insertions(+), 12 deletions(-)

Comments

Johannes Thumshirn July 3, 2024, 9:32 a.m. UTC | #1 
Looks good,
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
diff mbox series

Patch

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index c4aed1dfa497a3..c8757d47e0ef62 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -174,7 +174,6 @@  void bio_integrity_unmap_free_user(struct bio *bio)
 	bio->bi_integrity = NULL;
 	bio->bi_opf &= ~REQ_INTEGRITY;
 }
-EXPORT_SYMBOL(bio_integrity_unmap_free_user);
 
 /**
  * bio_integrity_add_page - Attach integrity metadata
diff --git a/block/blk-map.c b/block/blk-map.c
index bce144091128f6..df5f82d114720f 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -757,6 +757,9 @@  int blk_rq_unmap_user(struct bio *bio)
 			bio_release_pages(bio, bio_data_dir(bio) == READ);
 		}
 
+		if (bio_integrity(bio))
+			bio_integrity_unmap_free_user(bio);
+
 		next_bio = bio;
 		bio = bio->bi_next;
 		blk_mq_map_bio_put(next_bio);
diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
index fb46f55f8b2894..f1d58e70933f54 100644
--- a/drivers/nvme/host/ioctl.c
+++ b/drivers/nvme/host/ioctl.c
@@ -112,13 +112,6 @@  static struct request *nvme_alloc_user_request(struct request_queue *q,
 	return req;
 }
 
-static void nvme_unmap_bio(struct bio *bio)
-{
-	if (bio_integrity(bio))
-		bio_integrity_unmap_free_user(bio);
-	blk_rq_unmap_user(bio);
-}
-
 static int nvme_map_user_request(struct request *req, u64 ubuffer,
 		unsigned bufflen, void __user *meta_buffer, unsigned meta_len,
 		u32 meta_seed, struct io_uring_cmd *ioucmd, unsigned int flags)
@@ -165,7 +158,7 @@  static int nvme_map_user_request(struct request *req, u64 ubuffer,
 
 out_unmap:
 	if (bio)
-		nvme_unmap_bio(bio);
+		blk_rq_unmap_user(bio);
 out:
 	blk_mq_free_request(req);
 	return ret;
@@ -203,7 +196,7 @@  static int nvme_submit_user_cmd(struct request_queue *q,
 	if (result)
 		*result = le64_to_cpu(nvme_req(req)->result.u64);
 	if (bio)
-		nvme_unmap_bio(bio);
+		blk_rq_unmap_user(bio);
 	blk_mq_free_request(req);
 
 	if (effects)
@@ -414,7 +407,7 @@  static void nvme_uring_task_cb(struct io_uring_cmd *ioucmd,
 	struct nvme_uring_cmd_pdu *pdu = nvme_uring_cmd_pdu(ioucmd);
 
 	if (pdu->bio)
-		nvme_unmap_bio(pdu->bio);
+		blk_rq_unmap_user(pdu->bio);
 	io_uring_cmd_done(ioucmd, pdu->status, pdu->result, issue_flags);
 }
 
@@ -440,7 +433,7 @@  static enum rq_end_io_ret nvme_uring_cmd_end_io(struct request *req,
 	 */
 	if (blk_rq_is_poll(req)) {
 		if (pdu->bio)
-			nvme_unmap_bio(pdu->bio);
+			blk_rq_unmap_user(pdu->bio);
 		io_uring_cmd_iopoll_done(ioucmd, pdu->result, pdu->status);
 	} else {
 		io_uring_cmd_do_in_task_lazy(ioucmd, nvme_uring_task_cb);