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authorDavid Rientjes <rientjes@google.com>2010-08-09 17:18:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:56 -0700
commit6f48d0ebd907ae419387f27b602ee98870cfa7bb (patch)
tree355bd8b616f5a78d8adabe5b9631d7aad970dbaa /.mailmap
parent5e9d834a0e0c0485dfa487281ab9650fc37a3bb5 (diff)
oom: select task from tasklist for mempolicy ooms
The oom killer presently kills current whenever there is no more memory free or reclaimable on its mempolicy's nodes. There is no guarantee that current is a memory-hogging task or that killing it will free any substantial amount of memory, however. In such situations, it is better to scan the tasklist for nodes that are allowed to allocate on current's set of nodes and kill the task with the highest badness() score. This ensures that the most memory-hogging task, or the one configured by the user with /proc/pid/oom_adj, is always selected in such scenarios. Signed-off-by: David Rientjes <rientjes@google.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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