Michal Hocko 1af8bb4326 mm, oom: fortify task_will_free_mem() ... task_will_free_mem is rather weak. It doesn't really tell whether the task has chance to drop its mm. 98748bd722 ("oom: consider multi-threaded tasks in task_will_free_mem") made a first step into making it more robust for multi-threaded applications so now we know that the whole process is going down and probably drop the mm. This patch builds on top for more complex scenarios where mm is shared between different processes - CLONE_VM without CLONE_SIGHAND, or in kernel use_mm(). Make sure that all processes sharing the mm are killed or exiting. This will allow us to replace try_oom_reaper by wake_oom_reaper because task_will_free_mem implies the task is reapable now. Therefore all paths which bypass the oom killer are now reapable and so they shouldn't lock up the oom killer. Link: http://lkml.kernel.org/r/1466426628-15074-8-git-send-email-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Cc: David Rientjes <rientjes@google.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-07-28 16:07:41 -07:00
..
acpi	Merge branches 'acpi-processor', 'acpi-cppc', 'acpi-apei' and 'acpi-sleep'	2016-07-25 13:42:25 +02:00
asm-generic	Merge branch 'akpm' (patches from Andrew)	2016-07-26 19:55:54 -07:00
clocksource
crypto	A number of improvements for the /dev/random driver; the most	2016-07-27 15:11:55 -07:00
drm	Merge branch 'drm-vmwgfx-fixes' of git://people.freedesktop.org/~syeh/repos_linux into drm-fixes	2016-07-15 13:51:55 +10:00
dt-bindings
keys
kvm
linux	mm, oom: fortify task_will_free_mem()	2016-07-28 16:07:41 -07:00
math-emu
media	[media] doc-rst: add some needed escape codes	2016-07-23 08:05:02 -03:00
memory
misc
net	net_sched: get rid of struct tcf_common	2016-07-25 21:49:20 -07:00
pcmcia
ras
rdma
rxrpc
scsi	fcoe: implement FIP VLAN responder	2016-07-20 19:49:41 -04:00
soc
sound
target
trace	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-07-27 12:03:20 -07:00
uapi	media updates for v4.8-rc1	2016-07-27 14:58:31 -07:00
video
xen	xen: add static initialization of steal_clock op to xen_time_ops	2016-07-26 14:07:06 +01:00
Kbuild