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(parent: 7391142) | patch
io_uring: add POLL_FIRST support for send/sendmsg and recv/recvmsg
authorJens Axboe <axboe@kernel.dk>
Tue, 26 Apr 2022 18:11:33 +0000 (12:11 -0600)
committerJens Axboe <axboe@kernel.dk>
Thu, 5 May 2022 23:09:31 +0000 (17:09 -0600)
commit0455d4ccec548b0fb51db39a4d3350a7a80a0222
treedd14449acab4a4236eca3acb438f5c5e01db7c08tree | snapshot
parent73911426aaaadbae54fa72359b33a7b6a56947dbcommit | diff
io_uring: add POLL_FIRST support for send/sendmsg and recv/recvmsg

If IORING_RECVSEND_POLL_FIRST is set for recv/recvmsg or send/sendmsg,
then we arm poll first rather than attempt a receive or send upfront.
This can be useful if we expect there to be no data (or space) available
for the request, as we can then avoid wasting time on the initial
issue attempt.

Reviewed-by: Hao Xu <howeyxu@tencent.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
include/uapi/linux/io_uring.h diff | blob | history
Domain: System / Kernel;