linux-kernel - Re: [RFC][PATCH] a bit improvement of ZONE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20080118200423.8FBC.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Fri, 18 Jan 2008 20:11:22 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Marcelo Tosatti <marcelo@...ck.org>,
	Rik van Riel <riel@...hat.com>,
	Daniel Spang <daniel.spang@...il.com>
Subject: Re: [RFC][PATCH] a bit improvement of ZONE_DMA page reclaim

Hi Andrew,

> > > on X86, ZONE_DMA is very very small.
> > > It is often no used at all. 
> > 
> > In that case page-reclaim is supposed to set all_unreclaimable and
> > basically ignores the zone altogether until it looks like something might
> > have changed.
> > 
> > Is that code not working?  (quite possible).
> 
> please insert blow debug printk and dd if=bigfile of=/dev/null.
> you see "near_oom(DMA) 0 0 0" messages :)

sorry, my last mail is not enough description.
It is not so useful at solo use. 
As you say, If long time passes all_unreclaimable turn on and 
incorrect shrink list become no happned.

but, my mem_notify patch very dislike incorrect shrink ;-)

result as, I don't hope quick merge.
and I will merge to my mem_notify patch series.

Thanks.


- kosaki


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/