[PATCH 6.8 134/399] io_uring: fix mshot io-wq checks

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



6.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Pavel Begunkov <asml.silence@xxxxxxxxx>

[ Upstream commit 3a96378e22cc46c7c49b5911f6c8631527a133a9 ]

When checking for concurrent CQE posting, we're not only interested in
requests running from the poll handler but also strayed requests ended
up in normal io-wq execution. We're disallowing multishots in general
from io-wq, not only when they came in a certain way.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 17add5cea2bba ("io_uring: force multishot CQEs into task context")
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
Link: https://lore.kernel.org/r/d8c5b36a39258036f93301cd60d3cd295e40653d.1709905727.git.asml.silence@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 io_uring/net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/net.c b/io_uring/net.c
index 386a6745ae32f..5a4001139e288 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -87,7 +87,7 @@ static inline bool io_check_multishot(struct io_kiocb *req,
 	 * generic paths but multipoll may decide to post extra cqes.
 	 */
 	return !(issue_flags & IO_URING_F_IOWQ) ||
-		!(issue_flags & IO_URING_F_MULTISHOT) ||
+		!(req->flags & REQ_F_APOLL_MULTISHOT) ||
 		!req->ctx->task_complete;
 }
 
-- 
2.43.0







[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux