public inbox for [email protected]
 help / color / mirror / Atom feed
From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH 01/14] io_uring: optimise io_rw_reissue()
Date: Tue, 19 Jan 2021 13:32:34 +0000	[thread overview]
Message-ID: <c0da843b0707e793e6a8a9ffc52e8d7eb8a2d37f.1611062505.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

The hot path is IO completing on the first try. Reshuffle io_rw_reissue() so
it's checked first.

Signed-off-by: Pavel Begunkov <[email protected]>
---
 fs/io_uring.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 4bcabc51fc5a..7f4bc5092b5c 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2713,12 +2713,13 @@ static bool io_resubmit_prep(struct io_kiocb *req, int error)
 static bool io_rw_reissue(struct io_kiocb *req, long res)
 {
 #ifdef CONFIG_BLOCK
-	umode_t mode = file_inode(req->file)->i_mode;
+	umode_t mode;
 	int ret;
 
-	if (!S_ISBLK(mode) && !S_ISREG(mode))
+	if (res != -EAGAIN && res != -EOPNOTSUPP)
 		return false;
-	if ((res != -EAGAIN && res != -EOPNOTSUPP) || io_wq_current_is_worker())
+	mode = file_inode(req->file)->i_mode;
+	if ((!S_ISBLK(mode) && !S_ISREG(mode)) || io_wq_current_is_worker())
 		return false;
 
 	lockdep_assert_held(&req->ctx->uring_lock);
-- 
2.24.0


  reply	other threads:[~2021-01-19 14:57 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-19 13:32 [PATCH for-next 00/14] mostly cleanups for 5.12 Pavel Begunkov
2021-01-19 13:32 ` Pavel Begunkov [this message]
2021-01-19 13:32 ` [PATCH 02/14] io_uring: refactor io_resubmit_prep() Pavel Begunkov
2021-01-19 13:32 ` [PATCH 03/14] io_uring: cleanup personalities under uring_lock Pavel Begunkov
2021-01-19 13:32 ` [PATCH 04/14] io_uring: inline io_async_submit() Pavel Begunkov
2021-01-19 13:32 ` [PATCH 05/14] io_uring: inline __io_commit_cqring() Pavel Begunkov
2021-01-19 13:32 ` [PATCH 06/14] io_uring: further deduplicate #CQ events calc Pavel Begunkov
2021-01-19 13:32 ` [PATCH 07/14] io_uring: simplify io_alloc_req() Pavel Begunkov
2021-01-19 13:32 ` [PATCH 08/14] io_uring: remove __io_state_file_put Pavel Begunkov
2021-01-19 13:32 ` [PATCH 09/14] io_uring: deduplicate failing task_work_add Pavel Begunkov
2021-01-19 13:32 ` [PATCH 10/14] io_uring: don't block resource recycle by oveflows Pavel Begunkov
2021-01-19 22:59   ` Jens Axboe
2021-01-19 23:08     ` Pavel Begunkov
2021-01-19 13:32 ` [PATCH 11/14] io_uring: add a helper timeout mode calculation Pavel Begunkov
2021-01-19 13:32 ` [PATCH 12/14] io_uring: help inlining of io_req_complete() Pavel Begunkov
2021-01-19 13:32 ` [PATCH 13/14] io_uring: don't flush CQEs deep down the stack Pavel Begunkov
2021-01-19 13:32 ` [PATCH 14/14] io_uring: save atomic dec for inline executed reqs Pavel Begunkov
2021-01-19 23:01 ` [PATCH for-next 00/14] mostly cleanups for 5.12 Jens Axboe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=c0da843b0707e793e6a8a9ffc52e8d7eb8a2d37f.1611062505.git.asml.silence@gmail.com \
    [email protected] \
    [email protected] \
    [email protected] \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox