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Date: Thu, 7 Feb 2002 14:34:20 -0200 (BRST)
From: Marcelo Tosatti <marcelo@conectiva.com.br>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: Andrew Morton <akpm@zip.com.au>, Manfred Spraul <manfred@colorfullife.com>,
        Andrea Arcangeli <andrea@suse.de>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch] VM_IO fixes
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On Thu, 7 Feb 2002, Roman Zippel wrote:

> Hi,
> 
> On Wed, 6 Feb 2002, Andrew Morton wrote:
> 
> > Any filesystem which implements its own mmap() method, and which
> > does not call generic_file_mmap() needs to be changed to clear
> > VM_IO inside its mmap function.  All in-kernel filesystems are
> > OK, as is XFS.  And the only breakage this can cause to out-of-kernel
> > filesystems is failure to include mappings in core files, and
> > inability to use PEEKUSR.
> 
> You forgot shared memory via mm/shmem.c and ipc/shm.c.

Andrew, could you please send me an uptodated patch to fix that ? 

> Another possibility is to test whether the driver provides a nopage
> function, as i/o areas are usually mapped with io_remap_page_range. 

Eek, thats too kludgy. ;) 

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