linux-kernel - Re: [git pull] vfs.git fixes for -rc2

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Message-ID: <20140210111759.GD18016@ZenIV.linux.org.uk>
Date:	Mon, 10 Feb 2014 11:17:59 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Dave Chinner <david@...morbit.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [git pull] vfs.git fixes for -rc2

On Mon, Feb 10, 2014 at 09:47:47PM +1100, Dave Chinner wrote:

> and the updated pos value on O_APPEND writes is never folded back
> into ppos.

Not true.  Check generic_file_buffered_write() and generic_file_direct_write()
- that's where it's normally stored into iocb->ki_pos (via *ppos).  And yes,
I agree that the damn thing is obfuscated to hell and back - other commits
in my local tree kill 'ppos' arguments of __generic_file_aio_write() and
generic_file_buffered_write() (equal to &iocb->ki_pos for all call sites),
which makes it a bit easier to keep track of.  Will push that part of
queue into vfs.git#iov_iter today...
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