Jens Axboe 5756328b3f UPSTREAM: io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups ...

[ Upstream commit 4464853277 ]

Pass in EPOLL_URING_WAKE when signaling eventfd or doing poll related
wakups, so that we can check for a circular event dependency between
eventfd and epoll. If this flag is set when our wakeup handlers are
called, then we know we have a dependency that needs to terminate
multishot requests.

eventfd and epoll are the only such possible dependencies.

Bug: 268174392
Cc: stable@vger.kernel.org # 6.0
Change-Id: I6e45fa1484657bd5caad007783785c2ee97a9929
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 189556b05e)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

2023-02-07 13:38:16 +00:00

..

io_uring.c

UPSTREAM: io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups

2023-02-07 13:38:16 +00:00

io-wq.c

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io-wq.h

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Makefile

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