korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-23 22:34:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

io_uring: disable draining earlier

Browse Source 
Clear ->drain_active in two more cases where we check for a need of
draining. It's not a bug, but still may lead to some extra requests
being punted to io-wq, and that may be not desirable.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d20b265f77bb4e8860b15b9987252c7c711dfcba.1632516769.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-09-24 22:00:04 +01:00 committed by Jens Axboe
parent a1cdbb4cb5
commit 5e371265ea
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
fs/io_uring.c
View File

@ -6461,8 +6461,10 @@ static bool io_drain_req(struct io_kiocb *req)
seq = io_get_sequence(req); seq = io_get_sequence(req);
/* Still a chance to pass the sequence check */ /* Still a chance to pass the sequence check */
if (!req_need_defer(req, seq) && list_empty_careful(&ctx->defer_list)) if (!req_need_defer(req, seq) && list_empty_careful(&ctx->defer_list)) {
ctx->drain_active = false;
return false; return false;
}
ret = io_req_prep_async(req); ret = io_req_prep_async(req);
if (ret) if (ret)
@ -6481,6 +6483,7 @@ fail:
spin_unlock(&ctx->completion_lock); spin_unlock(&ctx->completion_lock);
kfree(de); kfree(de);
io_queue_async_work(req, NULL); io_queue_async_work(req, NULL);
ctx->drain_active = false;
return true; return true;
} }