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

From: Marcelo Tosatti
Date: Mon Nov 08 2004 - 14:48:20 EST

On Fri, Nov 05, 2004 at 06:01:18PM -0200, Marcelo Tosatti wrote:

> While doing this, I noticed that kswapd will happily go to sleep
> if all zones have all_unreclaimable set. I bet this is the reason
> for the page allocation failures we are seeing. So the patch
> also makes balance_pgdat() NOT return and go to "loop_again"
> instead in case of page shortage - even if all_unreclaimable is set.
> Basically the "loop_again" logic IS NOT WORKING!

Wrong, the loop_again logic is working, all_zones_ok will be
set when DEF_PRIORITY = 0.

So the page allocation failures are happening for some other
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