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Message-ID: <d120d50005082306506fc9bd51@mail.gmail.com>
Date: Tue, 23 Aug 2005 08:50:32 -0500
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reply-To: dtor_core@ameritech.net
To: Christoph Hellwig <hch@infradead.org>,
       Pekka J Enberg <penberg@cs.helsinki.fi>, Andrew Morton <akpm@osdl.org>,
       Pekka Enberg <penberg@gmail.com>, nathans@sgi.com,
       dtor_core@ameritech.net, linux-kernel@vger.kernel.org, greg@kroah.com
Subject: Re: [PATCH] mm: return ENOBUFS instead of ENOMEM in generic_file_buffered_write
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On 8/23/05, Christoph Hellwig <hch@infradead.org> wrote:
> On Tue, Aug 23, 2005 at 11:46:33AM +0300, Pekka J Enberg wrote:
> > As noticed by Dmitry Torokhov, write() can not return ENOMEM:
> >
> > http://www.opengroup.org/onlinepubs/000095399/functions/write.html
> >
> > Therefore fixup generic_file_buffered_write() in mm/filemap.c (pointed out by
> > Nathan Scott).
> 
> We had this discussion before, for EACCESS then.  We've always been returning
> more errnos than SuS mentioned and Linus declared it's fine.
> 

So does that mean that any error code is allowed? I would love to be
able to return ENODEV from a sysfs attribute if its device happens to
be removed in process. Is there a list of valid errnos for Linux that
supercedes SuS?

-- 
Dmitry