linux-kernel - Re: [PATCH 3/3] PM/Hibernate: Use memory allocations to free memory

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

Message-Id: <20090502104947.2720f173.akpm@linux-foundation.org>
Date:	Sat, 2 May 2009 10:49:47 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	pavel@....cz, torvalds@...ux-foundation.org, jens.axboe@...cle.com,
	alan-jenkins@...fmail.co.uk, linux-kernel@...r.kernel.org,
	kernel-testers@...r.kernel.org, linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH 3/3] PM/Hibernate: Use memory allocations to free memory

On Sat, 2 May 2009 13:46:34 +0200 "Rafael J. Wysocki" <rjw@...k.pl> wrote:

> > Do we need the bitmap?  I expect we can just string all these pages
> > onto a local list via page.lru.  Would need to check that - the
> > pageframe fields are quite overloaded.
> 
> This is the reason why we use the bitmaps for hibernation. :-)

grep the tree for page->lru and you'll see that quite a few page
consumers are using it.  So you'd be pretty safe doing it this way.

Whether it's _worth_ doing it this way is debatable, given that
hibernation uses bitmaps elsewhere.  But it would shrink the patch a
bit I expect?
--
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/