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Ni Xun e4043a3c0f mm: add support for async page locking 
upstream commit id: dd3e6d5039de1cbff4e20e2b34390ff44cdb182f

Normally waiting for a page to become unlocked, or locking the page,
requires waiting for IO to complete. Add support for lock_page_async()
and wait_on_page_locked_async(), which are callback based instead. This
allows a caller to get notified when a page becomes unlocked, rather
than wait for it.

We add a new iocb field, ki_waitq, to pass in the necessary data for this
to happen. We can unionize this with ki_cookie, since that is only used
for polled IO. Polled IO can never co-exist with async callbacks, as it is
(by definition) polled completions. struct wait_page_key is made public,
and we define struct wait_page_async as the interface between the caller
and the core.

Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Ni Xun <richardni@tencent.com>
 		2022-12-20 10:42:18 +08:00
..
acpi ACPI: scan: Use unique number for instance_no 2021-04-12 12:53:31 +08:00
asm-generic bpf: Add BTF_ID_LIST/BTF_ID/BTF_ID_UNUSED macros 2022-08-30 11:33:27 +08:00
clocksource Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: api - check for ERR pointers in crypto_destroy_tfm() 2021-05-20 16:07:23 +08:00
drm iommu/vt-d: Move intel_iommu_gfx_mapped to Intel IOMMU header 2021-03-16 16:41:21 +08:00
dt-bindings Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
keys KEYS: Don't write out to userspace while holding key semaphore 2021-03-16 16:26:42 +08:00
kvm Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
linux mm: add support for async page locking 2022-12-20 10:42:18 +08:00
math-emu Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
media media: rc: compile rc-cec.c into rc-core 2021-04-12 12:53:01 +08:00
misc Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
net raw: convert raw sockets to RCU 2022-11-03 14:14:19 +08:00
pcmcia Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ras Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rdma RDMA/umem: Fix signature of stub ib_umem_find_best_pgsz() 2021-03-16 16:38:49 +08:00
scsi kabi: reserve space for kabi 2021-06-23 07:24:18 +00:00
soc irqchip/eznps: Fix build error for !ARC700 builds 2021-03-16 16:35:56 +08:00
sound ALSA: hda: intel-nhlt: verify config type 2021-04-12 12:52:52 +08:00
target scsi: target: core: Add cmd length set before cmd complete 2021-04-12 12:53:04 +08:00
trace writeback: Drop I_DIRTY_TIME_EXPIRE 2021-04-12 12:51:42 +08:00
uapi bpf: Allow for map-in-map with dynamic inner array map entries 2022-08-30 11:33:35 +08:00
vdso Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
video Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xen Xen/gntdev: correct error checking in gntdev_map_grant_pages() 2021-04-12 12:52:07 +08:00