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From: Kanchan Joshi <[email protected]>
To: [email protected], [email protected], [email protected],
	[email protected], [email protected]
Cc: [email protected], [email protected], [email protected],
	[email protected], [email protected],
	[email protected], Anuj Gupta <[email protected]>,
	Kanchan Joshi <[email protected]>
Subject: [PATCH 03/10] block: copy result back to user meta buffer correctly in case of split
Date: Fri, 26 Apr 2024 00:09:36 +0530	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

From: Anuj Gupta <[email protected]>

In case of split, the len and offset of bvec gets updated in the iter.
Use it to fetch the right bvec, and copy it back to user meta buffer.

Signed-off-by: Anuj Gupta <[email protected]>
Signed-off-by: Kanchan Joshi <[email protected]>
---
 block/bio-integrity.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index c1955f01412e..b4042414a08f 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -108,11 +108,15 @@ static void bio_integrity_uncopy_user(struct bio_integrity_payload *bip)
 	unsigned short nr_vecs = bip->bip_max_vcnt - 1;
 	struct bio_vec *copy = &bip->bip_vec[1];
 	size_t bytes = bip->bip_iter.bi_size;
+	struct bio_vec copy_bvec, src_bvec;
 	struct iov_iter iter;
 	int ret;
 
-	iov_iter_bvec(&iter, ITER_DEST, copy, nr_vecs, bytes);
-	ret = copy_to_iter(bvec_virt(bip->bip_vec), bytes, &iter);
+	copy_bvec = mp_bvec_iter_bvec(copy, bip->bip_iter);
+	src_bvec = mp_bvec_iter_bvec(bip->bip_vec, bip->bip_iter);
+
+	iov_iter_bvec(&iter, ITER_DEST, &copy_bvec, nr_vecs, bytes);
+	ret = copy_to_iter(bvec_virt(&src_bvec), bytes, &iter);
 	WARN_ON_ONCE(ret != bytes);
 
 	bio_integrity_unpin_bvec(copy, nr_vecs, true);
-- 
2.25.1


  parent reply	other threads:[~2024-04-25 18:47 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20240425184649epcas5p42f6ddbfb1c579f043a919973c70ebd03@epcas5p4.samsung.com>
2024-04-25 18:39 ` [PATCH 00/10] Read/Write with meta/integrity Kanchan Joshi
     [not found]   ` <CGME20240425184651epcas5p3404f2390d6cf05148eb96e1af093e7bc@epcas5p3.samsung.com>
2024-04-25 18:39     ` [PATCH 01/10] block: set bip_vcnt correctly Kanchan Joshi
2024-04-27  7:02       ` Christoph Hellwig
2024-04-27 14:16         ` Keith Busch
2024-04-29 10:59           ` Kanchan Joshi
2024-05-01  7:45           ` Christoph Hellwig
2024-05-01  8:03             ` Keith Busch
     [not found]   ` <CGME20240425184653epcas5p28de1473090e0141ae74f8b0a6eb921a7@epcas5p2.samsung.com>
2024-04-25 18:39     ` [PATCH 02/10] block: copy bip_max_vcnt vecs instead of bip_vcnt during clone Kanchan Joshi
2024-04-27  7:03       ` Christoph Hellwig
2024-04-29 11:28         ` Kanchan Joshi
2024-04-29 12:04           ` Keith Busch
2024-04-29 17:07             ` Christoph Hellwig
2024-04-30  8:25               ` Keith Busch
2024-05-01  7:46                 ` Christoph Hellwig
2024-05-01  7:50           ` Christoph Hellwig
     [not found]   ` <CGME20240425184656epcas5p42228cdef753cf20a266d12de5bc130f0@epcas5p4.samsung.com>
2024-04-25 18:39     ` Kanchan Joshi [this message]
2024-04-27  7:04       ` [PATCH 03/10] block: copy result back to user meta buffer correctly in case of split Christoph Hellwig
     [not found]   ` <CGME20240425184658epcas5p2adb6bf01a5c56ffaac3a55ab57afaf8e@epcas5p2.samsung.com>
2024-04-25 18:39     ` [PATCH 04/10] block: avoid unpinning/freeing the bio_vec incase of cloned bio Kanchan Joshi
2024-04-27  7:05       ` Christoph Hellwig
2024-04-29 11:40         ` Kanchan Joshi
2024-04-29 17:09           ` Christoph Hellwig
2024-05-01 13:02             ` Kanchan Joshi
2024-05-02  7:12               ` Christoph Hellwig
2024-05-03 12:01                 ` Kanchan Joshi
     [not found]   ` <CGME20240425184700epcas5p1687590f7e4a3f3c3620ac27af514f0ca@epcas5p1.samsung.com>
2024-04-25 18:39     ` [PATCH 05/10] block, nvme: modify rq_integrity_vec function Kanchan Joshi
2024-04-27  7:18       ` Christoph Hellwig
2024-04-29 11:34         ` Kanchan Joshi
2024-04-29 17:11           ` Christoph Hellwig
     [not found]   ` <CGME20240425184702epcas5p1ccb0df41b07845bc252d69007558e3fa@epcas5p1.samsung.com>
2024-04-25 18:39     ` [PATCH 06/10] block: modify bio_integrity_map_user argument Kanchan Joshi
2024-04-27  7:19       ` Christoph Hellwig
     [not found]   ` <CGME20240425184704epcas5p3b9eb6cce9c9658eb1d0d32937e778a5d@epcas5p3.samsung.com>
2024-04-25 18:39     ` [PATCH 07/10] block: define meta io descriptor Kanchan Joshi
     [not found]   ` <CGME20240425184706epcas5p1d75c19d1d1458c52fc4009f150c7dc7d@epcas5p1.samsung.com>
2024-04-25 18:39     ` [PATCH 08/10] io_uring/rw: add support to send meta along with read/write Kanchan Joshi
2024-04-26 14:25       ` Jens Axboe
2024-04-29 20:11         ` Kanchan Joshi
     [not found]   ` <CGME20240425184708epcas5p4f1d95cd8d285614f712868d205a23115@epcas5p4.samsung.com>
2024-04-25 18:39     ` [PATCH 09/10] block: add support to send meta buffer Kanchan Joshi
2024-04-26 15:21       ` Keith Busch
2024-04-29 11:47         ` Kanchan Joshi
     [not found]   ` <CGME20240425184710epcas5p2968bbc40ed10d1f0184bb511af054fcb@epcas5p2.samsung.com>
2024-04-25 18:39     ` [PATCH 10/10] nvme: add separate handling for user integrity buffer Kanchan Joshi
2024-04-25 19:56       ` Keith Busch
2024-04-26 10:57       ` kernel test robot
2024-04-26 14:19   ` [PATCH 00/10] Read/Write with meta/integrity Jens Axboe

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