linux-ext4 - Re: [PATCH 0/10 v9] No wait AIO

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Date:   Mon, 29 May 2017 01:32:17 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Goldwyn Rodrigues <rgoldwyn@...e.de>
Cc:     Christoph Hellwig <hch@...radead.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, viro@...iv.linux.org.uk
Subject: Re: [PATCH 0/10 v9] No wait AIO

On Sun, May 28, 2017 at 09:38:27PM -0500, Goldwyn Rodrigues wrote:
> This effort focused on writes only.
> 
> >From the point of view of the application/user, reads are usually
> required to complete with success. I don't see a scenario where reads()
> would need the nowait feature. If there is a use case, I'd be happy to
> add and support it.

Both of them usually have a point.  And if they would block the
main thread we'll have to offload them to a thread pool.