From: Jamie Lokier <jamie@shareable.org>
To: Benjamin LaHaise <bcrl@kvack.org>
Cc: Christoph Hellwig <hch@lst.de>,
akpm@osdl.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] add support for vectored and async I/O to all simple filesystems
Date: Wed, 2 Nov 2005 11:06:30 +0000 [thread overview]
Message-ID: <20051102110630.GB30550@mail.shareable.org> (raw)
In-Reply-To: <20051101205745.GB27231@kvack.org>
Benjamin LaHaise wrote:
> On Tue, Nov 01, 2005 at 07:20:00PM +0000, Jamie Lokier wrote:
> > Christoph Hellwig wrote:
> > > Every filesystem using generic_file_read/generic_file_write directly
> > > can easily support vectored and async (well at least the API, it's not
> > > async quite yet in mainline) I/O.
> >
> > Does this change mean aio system calls will now succeed, but not
> > actually be asynchronous?
>
> Yes, there doesn't seem to be the will to merge the buffered filesystem aio
> patches.
So it means that any program that mustn't block, must now have a
stupid kernel version check to make sure it avoids even trying aio
system calls? I was under the impression that the right thing to do
so far was try them, and when EINVAL is returned, use threads instead.
-- Jamie
next prev parent reply other threads:[~2005-11-02 11:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-01 2:36 [PATCH] add support for vectored and async I/O to all simple filesystems Christoph Hellwig
2005-11-01 10:28 ` Miklos Szeredi
2005-11-01 15:27 ` Christoph Hellwig
2005-11-01 17:19 ` Miklos Szeredi
2005-11-07 5:00 ` Christoph Hellwig
2005-11-01 19:20 ` Jamie Lokier
2005-11-01 20:57 ` Benjamin LaHaise
2005-11-02 11:06 ` Jamie Lokier [this message]
2005-11-02 16:21 ` Benjamin LaHaise
2005-11-02 16:29 ` Matthew Wilcox
2005-11-02 16:45 ` Benjamin LaHaise
2005-11-02 20:31 ` Jamie Lokier
2005-11-02 21:04 ` Anton Altaparmakov
2005-11-02 23:36 ` Jamie Lokier
2005-11-05 0:18 ` Christoph Hellwig
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