linux-kernel - Re: [PATCH 2/7] Define new syscalls readv2,preadv2,writev2,pwritev2

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Message-ID: <20140916210359.GB24591@infradead.org>
Date:	Tue, 16 Sep 2014 14:03:59 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	Milosz Tanski <milosz@...in.com>, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-aio@...ck.org,
	Mel Gorman <mgorman@...e.de>,
	Volker Lendecke <Volker.Lendecke@...net.de>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 2/7] Define new syscalls readv2,preadv2,writev2,pwritev2

On Tue, Sep 16, 2014 at 03:20:32PM -0400, Jeff Moyer wrote:
> Milosz Tanski <milosz@...in.com> writes:
> 
> > New syscalls with an extra flag argument. For now all flags except for 0 are
> > not supported.
> 
> The blatant copy-n-paste of the vectored functions bothers me.  I'll
> withold judgement until I've seen your next version of the patch series,
> though.

We could actually implement the non-flags ones based on the flagged ones
at the syscall level, similar to how recv is implemented on top of
recvfrom.

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