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Johannes Weiner 609838cfed mm: invoke oom-killer from remaining unconverted page fault handlers 
A few remaining architectures directly kill the page faulting task in an
out of memory situation.  This is usually not a good idea since that
task might not even use a significant amount of memory and so may not be
the optimal victim to resolve the situation.

Since 2.6.29's 1c0fe6e ("mm: invoke oom-killer from page fault") there
is a hook that architecture page fault handlers are supposed to call to
invoke the OOM killer and let it pick the right task to kill.  Convert
the remaining architectures over to this hook.

To have the previous behavior of simply taking out the faulting task the
vm.oom_kill_allocating_task sysctl can be set to 1.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>   [arch/arc bits]
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2013-07-09 10:33:20 -07:00
..
boot score: Add support for Sunplus S+core architecture 2009-06-19 11:38:47 +02:00
configs kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT 2011-01-20 17:02:05 -08:00
include Merge branch 'exotic-arch-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k 2013-07-03 11:12:08 -07:00
kernel score: normalize global variables exported by vmlinux.lds 2013-07-03 16:07:34 -07:00
lib score: remove __{put,get}_user_unknown 2009-06-19 11:41:07 +02:00
mm mm: invoke oom-killer from remaining unconverted page fault handlers 2013-07-09 10:33:20 -07:00
Kconfig idle: Remove GENERIC_IDLE_LOOP config switch 2013-04-17 10:39:38 +02:00
Kconfig.debug score: Fix typo in Kconfig.debug 2012-02-05 17:14:48 +01:00
Makefile Fix common misspellings 2011-03-31 11:26:23 -03:00