Re: [PATCH] Remove OOM killer from try_to_free_pages / all_unreclaimable braindamage

On Sat, 6 Nov 2004, Andrea Arcangeli wrote:

quoted

btw, PF_MEMDIE has always been racy in the way it's being set, so it can
corrupt the p->flags, but the race window is very small to trigger it
(and even if it triggers, it probably wouldn't be fatal). That's why I
don't use PF_MEMDIE in 2.4-aa.

On Sat, Nov 06, 2004 at 04:21:33PM +0000, Hugh Dickins wrote:

I expect so, yes, the PF_ flags don't have proper locking.  Those
places which set or clear PF_MEMALLOC are more likely to hit races,
but last time I went there I don't think there was a real serious problem.

I posted a testcase that triggers a panic with the PF_MEMALLOC race.


-- wli
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