From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [RFC, PATCH] Extensible AIO interface
Date: Tue, 02 Oct 2012 12:34:33 -0700
Message-ID: <m2r4pgwtva.fsf@firstfloor.org>
References: <20121001222341.GF26488@google.com>
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Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	tytso@google.com, tj@kernel.org,
	Dave Kleikamp <dave.kleikamp@oracle.com>,
	Zach Brown <zab@zabbo.net>,
	Dmitry Monakhov <dmonakhov@openvz.org>,
	"Maxim V. Patlasov" <mpatlasov@parallels.com>,
	michael.mesnier@intel.com, jeffrey.d.skirvin@intel.com
To: Kent Overstreet <koverstreet@google.com>
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In-Reply-To: <20121001222341.GF26488@google.com> (Kent Overstreet's message of
	"Mon, 1 Oct 2012 15:23:41 -0700")
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Kent Overstreet <koverstreet@google.com> writes:

> So, I and other people keep running into things where we really need to
> add an interface to pass some auxiliary... stuff along with a pread() or
> pwrite().

How would you enumerate this? 
How does the application know what the underlying stack supports/need?
How is versioning handled?

Frankly, in this form it looks more like a special purpose hack than a general
facility. 

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only