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From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
	user-mode-linux-devel@lists.sourceforge.net,
	toralf.foerster@gmx.de, jdike@addtoit.com,
	linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk,
	Richard Weinberger <richard@nod.at>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [uml-devel] [PATCH 1/1] hostfs: fix UML crash
Date: Tue, 19 Oct 2010 03:11:25 +0200	[thread overview]
Message-ID: <20101019011125.GA3905@lst.de> (raw)
In-Reply-To: <20101018130208.7b552527.akpm@linux-foundation.org>

On Mon, Oct 18, 2010 at 01:02:08PM -0700, Andrew Morton wrote:
> > > 
> > > Is there any reason for hostfs to be playing with the f_spare field at all?

No, there is no reason at all.  do_statfs is only called by
hostfs_statfs, which is the hostfs implementation of ->statfs.  zeroing
of the spare fields is done by common code (vfs_statfs_native).

Can you submit a patch to just remove the spare_out argument to do_statfs?

> 365b1818 added f_flags to `struct statfs' but didn't carry that over to
> `struct compat_statfs' and hence didn't copy f_flags over into
> compat_statfs.  Deliberate, or oversight?

Oversight.

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  reply	other threads:[~2010-10-19  1:12 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-18 16:36 [uml-devel] [PATCH 1/1] hostfs: fix UML crash Richard Weinberger
2010-10-18 18:40 ` Andrew Morton
2010-10-18 18:53   ` Richard Weinberger
2010-10-18 20:02     ` [uml-devel] " Andrew Morton
2010-10-19  1:11       ` Christoph Hellwig [this message]
2010-10-19 10:27         ` Richard Weinberger
2010-10-18 19:22   ` [uml-devel] " Geert Uytterhoeven
2010-10-18 19:31     ` Richard Weinberger
2010-10-18 19:43       ` Geert Uytterhoeven
2010-10-18 20:03         ` Richard Weinberger

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