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

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Message-ID: <20170613061431.GA11432@infradead.org>
Date:   Mon, 12 Jun 2017 23:14:31 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Goldwyn Rodrigues <rgoldwyn@...e.de>
Cc:     Al Viro <viro@...IV.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        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 Mon, Jun 12, 2017 at 05:38:13PM -0500, Goldwyn Rodrigues wrote:
> We had FS_NOWAIT in filesystem type flags (in v3), but retracted it
> later in v4.

A per-fs flag is wrong as file_operation may have different
capabilities.

> I will work on adding FMODE_AIO_NOWAIT in the meantime.

If Al prefers that let's go with it for now.  One other thing I'd
love is a supported flags field in struct file_operations that we
can compare the flags against.  Al, does that sound good as well?

> 
> Thanks,
> 
> -- 
> Goldwyn
---end quoted text---