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From: Keith Busch <[email protected]>
To: <[email protected]>, <[email protected]>,
	<[email protected]>
Cc: <[email protected]>, <[email protected]>, <[email protected]>,
	<[email protected]>, Keith Busch <[email protected]>
Subject: [PATCHv3 1/5] bvec: introduce multi-page bvec iterating
Date: Mon, 20 Nov 2023 14:40:54 -0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

From: Keith Busch <[email protected]>

Some bio_vec iterators can handle physically contiguous memory and have
no need to split bvec consideration on page boundaries.

Signed-off-by: Keith Busch <[email protected]>
---
 include/linux/bvec.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 555aae5448ae4..9364c258513e0 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -184,6 +184,12 @@ static inline void bvec_iter_advance_single(const struct bio_vec *bv,
 		((bvl = bvec_iter_bvec((bio_vec), (iter))), 1);	\
 	     bvec_iter_advance_single((bio_vec), &(iter), (bvl).bv_len))
 
+#define for_each_mp_bvec(bvl, bio_vec, iter, start)			\
+	for (iter = (start);						\
+	     (iter).bi_size &&						\
+		((bvl = mp_bvec_iter_bvec((bio_vec), (iter))), 1);	\
+	     bvec_iter_advance_single((bio_vec), &(iter), (bvl).bv_len))
+
 /* for iterating one bio from start to end */
 #define BVEC_ITER_ALL_INIT (struct bvec_iter)				\
 {									\
-- 
2.34.1


  reply	other threads:[~2023-11-20 22:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-20 22:40 [PATCHv3 0/5] block integrity: directly map user space addresses Keith Busch
2023-11-20 22:40 ` Keith Busch [this message]
2023-11-21  5:01   ` [PATCHv3 1/5] bvec: introduce multi-page bvec iterating Christoph Hellwig
2023-11-21  8:37   ` Ming Lei
2023-11-21 15:49     ` Keith Busch
2023-11-22  0:43       ` Ming Lei
2023-11-22  0:54         ` Keith Busch
2023-11-20 22:40 ` [PATCHv3 2/5] block: bio-integrity: directly map user buffers Keith Busch
2023-11-20 23:19   ` Jens Axboe
2023-11-21  5:04   ` Christoph Hellwig
2023-11-21 16:10   ` Anuj gupta
2023-11-20 22:40 ` [PATCHv3 3/5] nvme: use bio_integrity_map_user Keith Busch
2023-11-21  5:05   ` Christoph Hellwig
2023-11-20 22:40 ` [PATCHv3 4/5] iouring: remove IORING_URING_CMD_POLLED Keith Busch
2023-11-21  5:05   ` Christoph Hellwig
2023-11-20 22:40 ` [PATCHv3 5/5] io_uring: remove uring_cmd cookie Keith Busch
2023-11-21  5:05   ` Christoph Hellwig

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