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From: Goldwyn Rodrigues <rgoldwyn@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Avi Kivity <avi@scylladb.com>,
	linux-fsdevel@vger.kernel.org, linux-aio@kvack.org
Subject: Re: [PATCH] fs: Return EOPNOTSUPP if block layer does not support REQ_NOWAIT
Date: Tue, 18 Dec 2018 05:55:24 -0600	[thread overview]
Message-ID: <20181218115524.lt3dm53vgmbdbxjd@merlin> (raw)
In-Reply-To: <20181217173813.GB10437@infradead.org>

On  9:38 17/12, Christoph Hellwig wrote:
> On Sun, Dec 16, 2018 at 12:45:19PM +0200, Avi Kivity wrote:
> > I did see this on XFS too. The whole thing bothers me, it doesn't happen
> > consistently in some setups, which I don't understand. Either it should
> > trigger always or never.
> 
> Well, if it also happens in XFS the above change isn't going to fix
> it alone, there must be another issue hiding in addition to the error
> conversion problems.

Are you using multi-device setup as your block device? That could make
it return EOPNOTSUPP since we never got to a point where we could
merge code which supported bio based devices.

-- 
Goldwyn

  reply	other threads:[~2018-12-18 11:55 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-13 11:53 Goldwyn Rodrigues
2018-12-13 12:04 ` Avi Kivity
2018-12-13 14:24   ` Christoph Hellwig
2018-12-13 15:44     ` Goldwyn Rodrigues
2018-12-16 10:45     ` Avi Kivity
2018-12-17 17:38       ` Christoph Hellwig
2018-12-18 11:55         ` Goldwyn Rodrigues [this message]
2018-12-20 15:32           ` Avi Kivity
2018-12-13 16:27 ` Matthew Wilcox
2018-12-13 19:04   ` Goldwyn Rodrigues
2018-12-13 22:43 ` Dave Chinner
2018-12-14 17:09   ` Goldwyn Rodrigues
2018-12-16 21:35     ` Dave Chinner
2018-12-18 11:53       ` Goldwyn Rodrigues
2020-07-22 16:08 ` Avi Kivity
2020-07-28 13:38   ` Goldwyn Rodrigues
2020-07-28 13:47     ` Avi Kivity
2020-07-31 13:11   ` Christoph Hellwig

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