linux-ext4 - Re: [PATCH 1/8] far: remove i_alloc

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: <20110621160942.GA878@infradead.org>
Date:	Tue, 21 Jun 2011 12:09:42 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	Christoph Hellwig <hch@...radead.org>, viro@...iv.linux.org.uk,
	tglx@...utronix.de, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org, linux-btrfs@...r.kernel.org,
	mfasheh@...e.com, jlbec@...lplan.org
Subject: Re: [PATCH 1/8] far: remove i_alloc_sem abuse

On Wed, Jun 22, 2011 at 12:57:43AM +0900, OGAWA Hirofumi wrote:
> Christoph Hellwig <hch@...radead.org> writes:
> 
> > Add a new rw_semaphore to protect bmap against truncate.  Previous
> > i_alloc_sem was abused for this, but it's going away in this series.
> 
> In FAT case, ->i_mutex was better. But, last time I saw, shmfs was using
> ->i_mutex to call ->bmap. So, this was chosen instead.
> 
> I'm not checking current version yet though, if shmfs had change, we can
> use ->i_mutex.

I tried that first, but it gives an instant deadlock when using a
swapfile on fat.

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html