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authorDavid Rientjes <rientjes@google.com>2009-05-06 16:02:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-06 16:36:09 -0700
commit184101bf143ac96d62b3dcc17e7b3550f98d3350 (patch)
treec16b7d56d5603ae9d120a99cbf814195d750a380 /Documentation/kernel-parameters.txt
parentdf3935ffd6166fdd00702cf548fb5bb55737758b (diff)
oom: prevent livelock when oom_kill_allocating_task is set
When /proc/sys/vm/oom_kill_allocating_task is set for large systems that want to avoid the lengthy tasklist scan, it's possible to livelock if current is ineligible for oom kill. This normally happens when it is set to OOM_DISABLE, but is also possible if any threads are sharing the same ->mm with a different tgid. So change __out_of_memory() to fall back to the full task-list scan if it was unable to kill `current'. Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
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