linux/include
Jens Axboe caf1aeaffc eventpoll: add EPOLL_URING_WAKE poll wakeup flag
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>
2022-11-21 07:45:29 -07:00
..
acpi ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() 2022-10-13 20:40:09 +02:00
asm-generic kernel hardening fix for v6.1-rc5 2022-11-11 11:41:02 -08:00
clocksource
crypto
drm Merge drm/drm-fixes into drm-misc-fixes 2022-10-20 09:09:00 +02:00
dt-bindings These are the pin control changes for the v6.1 kernel cycle: 2022-10-11 10:59:59 -07:00
keys
kunit kunit: declare kunit_assert structs as const 2022-10-07 10:19:18 -06:00
kvm
linux Tracing fixes: 2022-11-20 15:25:32 -08:00
math-emu
media media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
memory
misc
net net: use struct_group to copy ip/ipv6 header addresses 2022-11-17 10:42:45 +01:00
pcmcia
ras
rdma
rv
scsi SCSI misc on 20221007 2022-10-07 12:33:18 -07:00
soc ARM: at91: pm: avoid soft resetting AC DLL 2022-11-01 12:25:19 +02:00
sound ASoC: Fixes for v6.1 2022-11-12 09:52:24 +01:00
target
trace linux-watchdog 6.1-rc2 tag 2022-10-21 12:25:39 -07:00
uapi eventpoll: add EPOLL_URING_WAKE poll wakeup flag 2022-11-21 07:45:29 -07:00
ufs SCSI misc on 20221007 2022-10-07 12:33:18 -07:00
vdso
video
xen xen/virtio: enable grant based virtio on x86 2022-10-10 14:31:26 +02:00