From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>,
io-uring@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/6] io_uring: simplify io_timeout locking
Date: Tue, 26 May 2020 20:34:03 +0300 [thread overview]
Message-ID: <a34d6960cbd39aed1361b7cfd0a606acddfec193.1590513806.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1590513806.git.asml.silence@gmail.com>
Move spin_lock_irq() earlier to have only 1 call site of it in
io_timeout(). It makes the flow easier.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
fs/io_uring.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 42b5603ee410..e30fc17dd268 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4845,6 +4845,7 @@ static int io_timeout(struct io_kiocb *req)
u32 seq = req->sequence;
data = &req->io->timeout;
+ spin_lock_irq(&ctx->completion_lock);
/*
* sqe->off holds how many events that need to occur for this
@@ -4853,7 +4854,6 @@ static int io_timeout(struct io_kiocb *req)
*/
if (!count) {
req->flags |= REQ_F_TIMEOUT_NOSEQ;
- spin_lock_irq(&ctx->completion_lock);
entry = ctx->timeout_list.prev;
goto add;
}
@@ -4864,7 +4864,6 @@ static int io_timeout(struct io_kiocb *req)
* Insertion sort, ensuring the first entry in the list is always
* the one we need first.
*/
- spin_lock_irq(&ctx->completion_lock);
list_for_each_prev(entry, &ctx->timeout_list) {
struct io_kiocb *nxt = list_entry(entry, struct io_kiocb, list);
unsigned nxt_seq;
--
2.24.0
next prev parent reply other threads:[~2020-05-26 17:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 17:34 [PATCH 0/6] random patches for 5.8 Pavel Begunkov
2020-05-26 17:34 ` [PATCH 1/6] io_uring: fix flush req->refs underflow Pavel Begunkov
2020-05-26 18:04 ` Jens Axboe
2020-05-26 17:34 ` Pavel Begunkov [this message]
2020-05-26 17:34 ` [PATCH 3/6] io_uring: don't re-read sqe->off in timeout_prep() Pavel Begunkov
2020-05-26 17:34 ` [PATCH 4/6] io_uring: separate DRAIN flushing into a cold path Pavel Begunkov
2020-05-26 17:34 ` [PATCH 5/6] io_uring: get rid of manual punting in io_close Pavel Begunkov
2020-05-26 17:34 ` [PATCH 6/6] io_uring: let io_req_aux_free() handle fixed files Pavel Begunkov
2020-05-26 18:03 ` Jens Axboe
2020-05-26 18:11 ` Pavel Begunkov
2020-05-26 19:32 ` [PATCH 0/6] random patches for 5.8 Jens Axboe
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