linux-kernel - Re: [PATCH -mm 0/10][RFC] aio: make struct kiocb private

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Message-Id: <200701160022.38492.david-b@pacbell.net>
Date:	Tue, 16 Jan 2007 00:22:35 -0800
From:	David Brownell <david-b@...bell.net>
To:	Nate Diller <nate.diller@...il.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...l.org>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Christoph Hellwig <hch@...radead.org>,
	Kenneth W Chen <kenneth.w.chen@...el.com>,
	linux-aio@...ck.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, Nate Diller <nate@...mi.com>,
	netdev@...r.kernel.org, ocfs2-devel@....oracle.com,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Trond Myklebust <trond.myklebust@....uio.no>,
	xfs-masters@....sgi.com
Subject: Re: [PATCH -mm 0/10][RFC] aio: make struct kiocb private

On Monday 15 January 2007 8:25 pm, Nate Diller wrote:

> I don't think we should be waiting on sync I/O 
> at the *top* of the call stack, like with wait_on_sync_kiocb(), I'd
> say the best place to wait is at the *bottom*, down in the I/O
> scheduler.

Erm ... *what* I/O scheduler?  These I/O requests may go directly
to the end of the hardware I/O queue, which already has an I/O model
where each request can correspond directly to a KIOCB.  And which
does not include any synchronous primitives.

No such scheduler has previously been, or _should_ be, required.

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