linux-kernel - Re: [PATCH v6 0/7] vfs: Non-blockling buffered fs read (page cache only)

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Message-ID: <CANP1eJEhbE3xWYkJyj3ebhPdRLM3Gj+bBxWz40tvB5HXbzgWZg@mail.gmail.com>
Date:	Fri, 14 Nov 2014 13:46:38 -0500
From:	Milosz Tanski <milosz@...in.com>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	Dave Jones <davej@...hat.com>, Dave Chinner <david@...morbit.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-aio@...ck.org" <linux-aio@...ck.org>,
	Mel Gorman <mgorman@...e.de>,
	Volker Lendecke <Volker.Lendecke@...net.de>,
	Tejun Heo <tj@...nel.org>, "Theodore Ts'o" <tytso@....edu>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linux API <linux-api@...r.kernel.org>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH v6 0/7] vfs: Non-blockling buffered fs read (page cache only)

On Fri, Nov 14, 2014 at 11:51 AM, Jeff Moyer <jmoyer@...hat.com> wrote:
> Dave Jones <davej@...hat.com> writes:
>
>> On Fri, Nov 14, 2014 at 11:32:53AM -0500, Jeff Moyer wrote:
>>
>>  > > Can you write a test (or set of) for fstests that exercises this new
>>  > > functionality? I'm not worried about performance, just
>>  > > correctness....
>>  >
>>  > On the subject of testing, I added support to trinity (attached,
>>  > untested).  That did raise one question.  Do we expect applications to
>>  > #include <linux/fs.h> to get the RWF_NONBLOCK definition?
>>
>> Trinity will at least need an addition to include/compat.h for
>> older headers that won't have the definition.  Looks ok otherwise.
>
> OK, I'll add that.
>
>> Also, I usually sit on stuff like this until the syscall numbers are
>> in Linus tree. This is 3.19 stuff I presume ?
>> istr akpm picked up execveat recently, so if that goes in first, we'll
>> need to respin this anyway..
>
> Sure.  I just wanted to test with trinity *before* it makes it into the
> kernel.  Crazy, I know.  ;-)

I am happy to help out to make sure it's solid... although deep down
inside I secretly wish that now wasn't the time we decided to start
doing it :)

>
> Cheers,
> Jeff



-- 
Milosz Tanski
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