Jens Axboe 595e52284d io_uring/poll: don't enable lazy wake for POLLEXCLUSIVE ... There are a few quirks around using lazy wake for poll unconditionally, and one of them is related the EPOLLEXCLUSIVE. Those may trigger exclusive wakeups, which wake a limited number of entries in the wait queue. If that wake number is less than the number of entries someone is waiting for (and that someone is also using DEFER_TASKRUN), then we can get stuck waiting for more entries while we should be processing the ones we already got. If we're doing exclusive poll waits, flag the request as not being compatible with lazy wakeups. Reported-by: Pavel Begunkov <asml.silence@gmail.com> Fixes: 6ce4a93dbb ("io_uring/poll: use IOU_F_TWQ_LAZY_WAKE for wakeups") Signed-off-by: Jens Axboe <axboe@kernel.dk>		2023-12-13 08:58:15 -07:00
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acpi
asm-generic	Kbuild updates for v6.7	2023-11-04 08:07:19 -10:00
clocksource
crypto	crypto: FIPS 202 SHA-3 register in hash info for IMA	2023-10-27 18:04:30 +08:00
drm	drm next and fixes for 6.7-rc1	2023-11-07 17:10:02 -08:00
dt-bindings	linux-watchdog 6.7-rc1 tag	2023-11-09 13:54:25 -08:00
keys
kunit
kvm	KVM/arm64 updates for 6.7	2023-10-31 16:37:07 -04:00
linux	io_uring/poll: don't enable lazy wake for POLLEXCLUSIVE	2023-12-13 08:58:15 -07:00
math-emu
media
memory
misc
net	net/sched: act_ct: Always fill offloading tuple iifidx	2023-11-08 17:47:08 -08:00
pcmcia
ras
rdma
rv
scsi	SCSI misc on 20231102	2023-11-02 15:13:50 -10:00
soc	IOMMU Updates for Linux v6.7	2023-11-09 13:37:28 -08:00
sound	ASoC: Updates for v6.7	2023-10-31 09:01:25 +01:00
target
trace	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
uapi	Including fixes from netfilter and bpf.	2023-11-09 17:09:35 -08:00
ufs
vdso
video	fbdev: stifb: Make the STI next font pointer a 32-bit signed offset	2023-10-30 14:54:41 +01:00
xen