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| author |   Michal Hocko <mhocko@suse.com> | 2017-09-06 16:24:53 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 17:27:30 -0700 |
| commit | da99ecf117fce6570bd3989263d68ee0007e1249 (patch) | |
| tree | 01b2db0be6a57d82c6d0a5939fa0c0b5fbc5e6f8 /mm/swapfile.c | |
| parent | mm, oom: do not rely on TIF_MEMDIE for memory reserves access (diff) | |
| download | linux-dev-da99ecf117fce6570bd3989263d68ee0007e1249.tar.xz linux-dev-da99ecf117fce6570bd3989263d68ee0007e1249.zip | |
mm: replace TIF_MEMDIE checks by tsk_is_oom_victim
TIF_MEMDIE is set only to the tasks whick were either directly selected
by the OOM killer or passed through mark_oom_victim from the allocator
path. tsk_is_oom_victim is more generic and allows to identify all
tasks (threads) which share the mm with the oom victim.
Please note that the freezer still needs to check TIF_MEMDIE because we
cannot thaw tasks which do not participage in oom_victims counting
otherwise a !TIF_MEMDIE task could interfere after oom_disbale returns.
Link: http://lkml.kernel.org/r/20170810075019.28998-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
0 files changed, 0 insertions, 0 deletions