From: Artem Bityutskiy <dedekind1@gmail.com>
To: Richard Weinberger <richard@nod.at>, linux-mtd@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Subject: Re: [PATCH 2/2] ubifs: Allow O_DIRECT
Date: Thu, 20 Aug 2015 14:29:42 +0300 [thread overview]
Message-ID: <1440070182.31419.200.camel@gmail.com> (raw)
In-Reply-To: <1440016553-26481-2-git-send-email-richard@nod.at>
On Wed, 2015-08-19 at 22:35 +0200, Richard Weinberger wrote:
> Currently UBIFS does not support direct IO, but some applications
> blindly use the O_DIRECT flag.
> Instead of failing upon open() we can do better and fall back
> to buffered IO.
>
> Cc: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
> Cc: dedekind1@gmail.com
> Suggested-by: Dave Chinner <david@fromorbit.com>
> Signed-off-by: Richard Weinberger <richard@nod.at>
Richard,
The idea was to explicitly reject what we do not support. Let's say I
am an app which requires O_DIRECT, and which does not want to work with
non-O_DIRECT. What would I do to ensure O_DIRECT?
Could you please check what other file-systems which do not support
O_DIRECT do in this case? Do they also fall-back to normal IO instead
of explicitly failing? If yes, we can do what is considered to be the
"standard" behavior.
Thanks!
next prev parent reply other threads:[~2015-08-20 11:29 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-19 20:35 [PATCH 1/2] ubifs: Remove dead xattr code Richard Weinberger
2015-08-19 20:35 ` [PATCH 2/2] ubifs: Allow O_DIRECT Richard Weinberger
2015-08-20 3:00 ` Dongsheng Yang
2015-08-20 6:42 ` Richard Weinberger
2015-08-20 7:14 ` Dongsheng Yang
2015-08-20 11:31 ` Artem Bityutskiy
2015-08-20 11:40 ` Richard Weinberger
2015-08-20 12:34 ` Artem Bityutskiy
2015-08-24 7:18 ` Artem Bityutskiy
2015-08-24 7:17 ` Dongsheng Yang
2015-08-24 7:20 ` Dongsheng Yang
2015-08-24 8:06 ` Christoph Hellwig
2015-08-20 20:49 ` Brian Norris
2015-08-24 7:13 ` Artem Bityutskiy
2015-08-24 7:53 ` Christoph Hellwig
2015-08-24 8:02 ` Artem Bityutskiy
2015-08-24 8:03 ` Christoph Hellwig
2015-08-24 8:00 ` Dongsheng Yang
2015-08-24 9:34 ` Artem Bityutskiy
2015-08-24 9:35 ` Richard Weinberger
2015-08-24 16:18 ` Brian Norris
2015-08-24 17:19 ` Jeff Moyer
2015-08-24 23:46 ` Dave Chinner
2015-08-25 1:28 ` Chris Mason
2015-08-25 15:48 ` Artem Bityutskiy
2015-08-25 14:00 ` Jeff Moyer
2015-08-25 14:13 ` Chris Mason
2015-08-25 14:18 ` Jeff Moyer
2015-08-20 11:29 ` Artem Bityutskiy [this message]
2015-08-20 2:48 ` [PATCH 1/2] ubifs: Remove dead xattr code Dongsheng Yang
2015-08-20 6:42 ` Artem Bityutskiy
2015-08-20 6:45 ` Richard Weinberger
2015-08-26 14:15 ` Josh Cartwright
2015-08-27 1:00 ` Dongsheng Yang
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