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Johannes Weiner e2ec2c2b96 arch: mm: pass userspace fault flag to generic fault handler 
commit 759496ba64 upstream.

Unlike global OOM handling, memory cgroup code will invoke the OOM killer
in any OOM situation because it has no way of telling faults occuring in
kernel context - which could be handled more gracefully - from
user-triggered faults.

Pass a flag that identifies faults originating in user space from the
architecture-specific fault handlers to generic code so that memcg OOM
handling can be improved.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-21 09:22:56 -08:00
..
acpi ACPI / hotplug: Fix conflicted PCI bridge notify handlers 2013-12-04 10:57:04 -08:00
asm-generic mm: use paravirt friendly ops for NUMA hinting ptes 2014-05-30 21:52:12 -07:00
clocksource clocksource: arch_timer: use virtual counters 2014-01-09 12:24:26 -08:00
crypto crypto: scatterwalk - Use sg_chain_ptr on chain entries 2013-12-11 22:36:29 -08:00
drm drm/radeon: remove invalid pci id 2014-11-14 08:48:00 -08:00
dt-bindings
keys
linux arch: mm: pass userspace fault flag to generic fault handler 2014-11-21 09:22:56 -08:00
math-emu
media media: vb2: fix VBI/poll regression 2014-10-09 12:18:42 -07:00
memory
misc
net net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks 2014-11-21 09:22:55 -08:00
pcmcia
ras
rdma
rxrpc
scsi scsi: fix our current target reap infrastructure 2014-05-30 21:52:11 -07:00
sound ALSA: control: Protect user controls against concurrent access 2014-06-26 15:12:43 -04:00
target target: Report correct response length for some commands 2014-06-30 20:09:45 -07:00
trace tracing: Fix syscall_*regfunc() vs copy_process() race 2014-07-06 18:54:16 -07:00
uapi netfilter: xt_bpf: add mising opaque struct sk_filter definition 2014-11-21 09:22:54 -08:00
video Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into linux-fbdev/for-3.10-fixes 2013-05-29 17:00:34 +08:00
xen xenbus: delay xenbus frontend resume if xenstored is not running 2013-05-29 09:04:19 -04:00
Kbuild