Jens Axboe f41f8904fd eventpoll: add EPOLL_URING_WAKE poll wakeup flag ... commit caf1aeaffc upstream. We can have dependencies between epoll and io_uring. Consider an epoll context, identified by the epfd file descriptor, and an io_uring file descriptor identified by iofd. If we add iofd to the epfd context, and arm a multishot poll request for epfd with iofd, then the multishot poll request will repeatedly trigger and generate events until terminated by CQ ring overflow. This isn't a desired behavior. Add EPOLL_URING so that io_uring can pass it in as part of the poll wakeup key, and io_uring can check for that to detect a potential recursive invocation. Cc: stable@vger.kernel.org # 6.0 Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-01-04 11:26:29 +01:00
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asm-generic	TTY / Serial driver changes for 6.0-rc1	2022-08-08 11:31:40 -07:00
drm	drm for 5.20/6.0	2022-08-03 19:52:08 -07:00
linux	eventpoll: add EPOLL_URING_WAKE poll wakeup flag	2023-01-04 11:26:29 +01:00
misc	habanalabs: add status of reset after device release	2022-07-12 09:09:31 +03:00
mtd	mtdchar: prevent integer overflow in a safety check	2022-06-09 15:03:32 +02:00
rdma	RDMA/hns: Fix incorrect sge nums calculation	2022-12-31 13:26:19 +01:00
scsi	treewide: uapi: Replace zero-length arrays with flexible-array members	2022-06-28 21:26:05 +02:00
sound	ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT	2022-12-31 13:26:01 +01:00
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