Jens Axboe 717ed90a66 eventpoll: add EPOLL_URING_WAKE poll wakeup flag ... [ Upstream commit caf1aeaffc ] 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> Stable-dep-of: 4464853277 ("io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-04 11:28:47 +01:00
..
asm-generic	hugetlb_encode.h: fix undefined behaviour (34 << 26)	2022-10-03 14:02:55 -07:00
drm	Merge tag 'drm-misc-fixes-2022-11-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes	2022-11-11 06:31:38 +10:00
linux	eventpoll: add EPOLL_URING_WAKE poll wakeup flag	2023-01-04 11:28:47 +01:00
misc	This update includes the following changes:	2022-10-10 13:04:25 -07:00
mtd	This pull request contains updates for UBI and UBIFS	2022-10-14 18:23:23 -07:00
rdma	RDMA/hns: Fix incorrect sge nums calculation	2022-12-31 13:32:33 +01:00
scsi	scsi: scsi_transport_fc: Adjust struct fc_nl_event flex array usage	2022-09-25 12:52:48 -04:00
sound	ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT	2022-12-31 13:32:14 +01:00
video	…
xen	…
Kbuild	…