mm: avoid endless looping for oom killed tasks
If a task is oom killed and still cannot find memory when trying with no watermarks, it's better to fail the allocation attempt than to loop endlessly. Direct reclaim has already failed and the oom killer will be a no-op since current has yet to die, so there is no other alternative for allocations that are not __GFP_NOFAIL. Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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