From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH 07/11] io_uring: keep io_req_free_batch() call locality
Date: Thu, 4 Mar 2021 18:52:21 +0000 [thread overview]
Message-ID: <4d19a3cfa02c12bf3d0cc86fe0cc437a7fac737b.1614883424.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
Don't do a function call (io_dismantle_req()) in the middle and place it
to near other function calls, otherwise may lead to excessive register
spilling.
Signed-off-by: Pavel Begunkov <[email protected]>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 94b080c3cc65..9ebc447456ab 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2052,6 +2052,7 @@ static void io_req_free_batch(struct req_batch *rb, struct io_kiocb *req,
struct io_submit_state *state)
{
io_queue_next(req);
+ io_dismantle_req(req);
if (req->task != rb->task) {
if (rb->task)
@@ -2062,7 +2063,6 @@ static void io_req_free_batch(struct req_batch *rb, struct io_kiocb *req,
rb->task_refs++;
rb->ctx_refs++;
- io_dismantle_req(req);
if (state->free_reqs != ARRAY_SIZE(state->reqs))
state->reqs[state->free_reqs++] = req;
else
--
2.24.0
next prev parent reply other threads:[~2021-03-04 18:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 18:52 [PATCH 5.13 00/11] a second batch for 5.13 Pavel Begunkov
2021-03-04 18:52 ` [PATCH 01/11] io_uring: don't take ctx refs in task_work handler Pavel Begunkov
2021-03-04 18:52 ` [PATCH 02/11] io_uring: optimise io_uring_enter() Pavel Begunkov
2021-03-04 18:52 ` [PATCH 03/11] io_uring: move setting tctx->sqpoll from hot path Pavel Begunkov
2021-03-04 18:52 ` [PATCH 04/11] io_uring: inline io_clean_op() fast path Pavel Begunkov
2021-03-04 18:52 ` [PATCH 05/11] io_uring: optimise io_dismantle_req() " Pavel Begunkov
2021-03-04 18:52 ` [PATCH 06/11] io_uring: abolish old io_put_file() Pavel Begunkov
2021-03-04 18:52 ` Pavel Begunkov [this message]
2021-03-04 18:52 ` [PATCH 08/11] io_uring: set req->work closer to all other fields Pavel Begunkov
2021-03-04 18:52 ` [PATCH 09/11] io_uring: inline __io_queue_linked_timeout() Pavel Begunkov
2021-03-04 18:52 ` [PATCH 10/11] io_uring: optimise success case of __io_queue_sqe Pavel Begunkov
2021-03-04 18:52 ` [PATCH 11/11] io_uring: refactor io_flush_cached_reqs() Pavel Begunkov
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