linux-ext4 - Re: [PATCH 0/10 v11] No wait AIO

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Message-ID: <20170610053441.GD6365@ZenIV.linux.org.uk>
Date:   Sat, 10 Jun 2017 06:34:41 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Goldwyn Rodrigues <rgoldwyn@...e.de>, akpm@...ux-foundation.org,
        linux-fsdevel@...r.kernel.org, jack@...e.com,
        linux-block@...r.kernel.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
        axboe@...nel.dk, linux-api@...r.kernel.org, adam.manzanares@....com
Subject: Re: [PATCH 0/10 v11] No wait AIO

On Thu, Jun 08, 2017 at 12:39:10AM -0700, Christoph Hellwig wrote:
> As already indicated this whole series looks fine to me.
> 
> Al: are you going to pick this up?  Or Andrew?

The main issue here is "let's bail out from ->write_iter() instances"
patch.  It very obviously has holes in coverage.

Could we have FMODE_AIO_NOWAIT and make those who claim to support it
set that in ->open()?  And make aio check that and bail out if asked
for nowait on a file without that flag...