io_uring/cmd: add iovec cache for commands

Browse source

Add iou_vec to commands and wire caching for it, but don't expose it to
users just yet. We need the vec cleared on initial alloc, but since
we can't place it at the beginning at the moment, zero the entire
async_data. It's cached, and the performance effects only the initial
allocation, and it might be not a bad idea since we're exposing those
bits to outside drivers.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/c0f2145b75791bc6106eb4e72add2cf6a2c72a7a.1742579999.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

This commit is contained in:

Pavel Begunkov 2025-03-21 18:04:33 +00:00 • committed by Jens Axboe

parent 5f14404bfa

commit 3a4689ac10

4 changed files with 28 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

io_uring/io_uring.c

View file

1

io_uring/opdef.c

View file

20

io_uring/uring_cmd.c

View file

5

io_uring/uring_cmd.h

View file