From: Jens Axboe <axboe@kernel.dk>
To: linux-fsdevel@vger.kernel.org
Cc: torvalds@linux-foundation.org, brauner@kernel.org,
viro@zeniv.linux.org.uk, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 08/11] iov_iter: set nr_segs = 1 for ITER_UBUF
Date: Thu, 30 Mar 2023 10:46:59 -0600 [thread overview]
Message-ID: <20230330164702.1647898-9-axboe@kernel.dk> (raw)
In-Reply-To: <20230330164702.1647898-1-axboe@kernel.dk>
To avoid needing to check if a given user backed iov_iter is of type
ITER_IOVEC or ITER_UBUF, set the number of segments for the ITER_UBUF
case to 1 as we're carrying a single segment.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
include/linux/uio.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/uio.h b/include/linux/uio.h
index 7f585ceedcb2..5dbd2dcab35c 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -355,7 +355,8 @@ static inline void iov_iter_ubuf(struct iov_iter *i, unsigned int direction,
.user_backed = true,
.data_source = direction,
.ubuf = buf,
- .count = count
+ .count = count,
+ .nr_segs = 1
};
}
/* Flags for iov_iter_get/extract_pages*() */
--
2.39.2
next prev parent reply other threads:[~2023-03-30 16:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-30 16:46 [PATCHSET v6b 0/11] Turn single segment imports into ITER_UBUF Jens Axboe
2023-03-30 16:46 ` [PATCH 01/11] block: ensure bio_alloc_map_data() deals with ITER_UBUF correctly Jens Axboe
2023-03-30 16:46 ` [PATCH 02/11] iov_iter: add iter_iovec() helper Jens Axboe
2023-03-30 16:46 ` [PATCH 03/11] IB/hfi1: check for user backed iterator, not specific iterator type Jens Axboe
2023-03-30 16:46 ` [PATCH 04/11] IB/qib: " Jens Axboe
2023-03-30 16:46 ` [PATCH 05/11] ALSA: pcm: " Jens Axboe
2023-03-30 16:46 ` [PATCH 06/11] iov_iter: add iter_iov_addr() and iter_iov_len() helpers Jens Axboe
2023-03-30 16:46 ` [PATCH 07/11] iov_iter: remove iov_iter_iovec() Jens Axboe
2023-03-30 16:46 ` Jens Axboe [this message]
2023-03-30 16:47 ` [PATCH 09/11] iov_iter: overlay struct iovec and ubuf/len Jens Axboe
2023-03-30 16:47 ` [PATCH 10/11] iov_iter: convert import_single_range() to ITER_UBUF Jens Axboe
2023-03-30 16:47 ` [PATCH 11/11] iov_iter: import single vector iovecs as ITER_UBUF Jens Axboe
2023-03-30 17:11 ` [PATCHSET v6b 0/11] Turn single segment imports into ITER_UBUF Linus Torvalds
2023-03-30 17:33 ` Jens Axboe
2023-03-30 21:53 ` Linus Torvalds
2023-03-30 22:18 ` Jens Axboe
2023-04-02 22:22 ` Jens Axboe
2023-04-02 23:37 ` Linus Torvalds
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