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Yisheng Xie 9e5bcd610f mm/migration: make isolate_movable_page() return int type 
Patch series "HWPOISON: soft offlining for non-lru movable page", v6.

After Minchan's commit bda807d444 ("mm: migrate: support non-lru
movable page migration"), some type of non-lru page like zsmalloc and
virtio-balloon page also support migration.

Therefore, we can:

1) soft offlining no-lru movable pages, which means when memory
   corrected errors occur on a non-lru movable page, we can stop to use
   it by migrating data onto another page and disable the original
   (maybe half-broken) one.

2) enable memory hotplug for non-lru movable pages, i.e. we may offline
   blocks, which include such pages, by using non-lru page migration.

This patchset is heavily dependent on non-lru movable page migration.

This patch (of 4):

Change the return type of isolate_movable_page() from bool to int.  It
will return 0 when isolate movable page successfully, and return -EBUSY
when it isolates failed.

There is no functional change within this patch but prepare for later
patch.

[xieyisheng1@huawei.com: v6]
  Link: http://lkml.kernel.org/r/1486108770-630-2-git-send-email-xieyisheng1@huawei.com
Link: http://lkml.kernel.org/r/1485867981-16037-2-git-send-email-ysxie@foxmail.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Suggested-by: Michal Hocko <mhocko@kernel.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:55 -08:00
..
acpi Merge branches 'acpi-bus', 'acpi-sleep' and 'acpi-processor' 2017-02-20 14:28:03 +01:00
asm-generic mm, x86: add support for PUD-sized transparent hugepages 2017-02-24 17:46:54 -08:00
clocksource
crypto crypto: algapi - make crypto_xor() and crypto_inc() alignment agnostic 2017-02-11 17:52:28 +08:00
drm Less anger inducing pull request for 4.11 2017-02-23 18:58:18 -08:00
dt-bindings ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
keys
kvm KVM: arm/arm64: Emulate the EL1 phys timer registers 2017-02-08 15:13:37 +00:00
linux mm/migration: make isolate_movable_page() return int type 2017-02-24 17:46:55 -08:00
math-emu
media
memory
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
pcmcia
ras
rdma Mellanox specific updates for 4.11 merge window 2017-02-23 11:27:49 -08:00
rxrpc
scsi SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
soc ARC updates for 4.11 rc1 2017-02-22 10:33:53 -08:00
sound ASoC: Updates for v4.11 2017-02-20 21:43:40 +01:00
target First set of updates for 4.11 kernel merge window 2017-02-23 08:27:57 -08:00
trace mm: vmscan: kick flushers when we encounter dirty pages on the LRU 2017-02-24 17:46:54 -08:00
uapi userfaultfd: non-cooperative: rename *EVENT_MADVDONTNEED to *EVENT_REMOVE 2017-02-24 17:46:54 -08:00
video drm/exynos/decon5433: signal vblank only on odd fields 2017-02-07 13:52:52 +09:00
xen xen/privcmd: Add IOCTL_PRIVCMD_DM_OP 2017-02-14 15:13:43 -05:00
Kbuild