linux-kernel - Re: [PATCH 02/16] autofs4: switch autofs4_write to __kernel

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Date:   Wed, 30 Aug 2017 16:30:26 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Christoph Hellwig <hch@....de>
Cc:     arve@...roid.com, riandrews@...roid.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/16] autofs4: switch autofs4_write to __kernel_write

On Wed, Aug 30, 2017 at 04:59:53PM +0200, Christoph Hellwig wrote:
> Instead of playing games with the address limit..

I wonder...  Do we verify that it's a pipe?  If so, ->f_pos can
(and should) be left alone...