linux-kernel - Re: [PATCH 16/24] nfs: check mnt instead of superblock directly

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Date:	Wed, 19 Sep 2007 18:36:05 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Dave Hansen <haveblue@...ibm.com>
Cc:	akpm@...l.org, linux-kernel@...r.kernel.org, hch@...radead.org
Subject: Re: [PATCH 16/24] nfs: check mnt instead of superblock directly

On Mon, Sep 17, 2007 at 11:27:39AM -0700, Dave Hansen wrote:
> 
> If we depend on the inodes for writeability, we will not
> catch the r/o mounts when implemented.
> 
> This patches uses __mnt_want_write().  It does not guarantee
> that the mount will stay writeable after the check.  But,
> this is OK for one of the checks because it is just for a
> printk().
> 
> The other two are probably unnecessary and duplicate existing
> checks in the VFS.  This won't make them better checks than
> before, but it will make them detect r/o mounts.

Ok from me, but can please get a nfs person to look over this
aswell?

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