linux-kernel - Re: [PATCH 7/6] Lost bits - fix PG_writeback vs PG

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: <1156540752.5927.66.camel@localhost>
Date:	Fri, 25 Aug 2006 17:19:12 -0400
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...l.org>, Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH 7/6] Lost bits - fix PG_writeback vs PG_private race in
	NFS

On Fri, 2006-08-25 at 22:44 +0200, Peter Zijlstra wrote:
> The VM doesn't really like PG_private set on PG_swapcache pages, I guess
> I'll have to rectify that and leave the NFS behaviour as is.

You might want to consider disabling NFS data cache revalidation on swap
files since it doesn't really make sense to have other clients change
the file while you are using it.

If you do, you could also skip setting PG_private on swap pages, since
there ought to be no further races with invalidate_inode_pages2() to
deal with.

Cheers,
  Trond

-
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/