linux-kernel - Re: Regression in suspend to ram in 2.6.31-rc kernels

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:	Tue, 8 Sep 2009 21:48:33 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Christoph Hellwig <hch@....de>
Cc:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Zdenek Kabelac <zdenek.kabelac@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mmc@...r.kernel.org, viro@...iv.linux.org.uk
Subject: Re: Regression in suspend to ram in 2.6.31-rc kernels

On Tuesday 08 September 2009, Christoph Hellwig wrote:
> On Fri, Sep 04, 2009 at 09:47:46AM +0900, OGAWA Hirofumi wrote:
> > Well, that commit seems a bit strange. It calls fat_clusters_flush()
> > unconditionally without checking sb->s_dirt. However, if my guess is
> > right, "sync after removed event" itself sounds like the issue in
> > suspend process.
> 
> The idea of ->sync_fs is that we always perform the sync activity,
> and not just the usual background superblock writeback trigerred by
> s_dirt.  If FAT doesn't need that and never has races around s_dirt
> you can add the check back, but I would recommend against it.
> 
> Also when you hack around this in FAt MMC will still fail with every
> other filesystem.

So, what should be done in your opinion?

Rafael
--
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/