linux-kernel - Re: [PATCH] MM: implement MADV_FREE lazy freeing of anonymous 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]

Date:	Mon, 07 May 2007 00:56:09 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Ulrich Drepper <drepper@...hat.com>
CC:	Nick Piggin <nickpiggin@...oo.com.au>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jakub Jelinek <jakub@...hat.com>
Subject: Re: [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory

Ulrich Drepper wrote:
> Rik van Riel wrote:
>> I think that maybe for 2.6.22 we should just alias MADV_FREE
>> to run with the MADV_DONTNEED functionality, so that the glibc
>> people can make the change on their side while we figure out
>> what will be the best thing to do on the kernel side.
> 
> No need for that.  We can later extend glibc to use MADV_FREE and fall 
> back on MADV_DONTNEED.

It's trivial to merge the MADV_FREE #defines into the kernel
though, and aliasing MADV_FREE to MADV_DONTNEED for the time
being is a one-liner - just an extra constant into the big
switch statement in sys_madvise().

-
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/