From: Dave Chinner <david@fromorbit.com>
To: Matthew Wilcox <matthew@wil.cx>
Cc: xfs@oss.sgi.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] Extend completions to provide XFS object flush requirements
Date: Thu, 26 Jun 2008 21:32:09 +1000 [thread overview]
Message-ID: <20080626113209.GK11558@disturbed> (raw)
In-Reply-To: <20080626112612.GW4392@parisc-linux.org>
On Thu, Jun 26, 2008 at 05:26:12AM -0600, Matthew Wilcox wrote:
> On Thu, Jun 26, 2008 at 02:41:12PM +1000, Dave Chinner wrote:
> > XFS object flushing doesn't quite match existing completion semantics. It
> > mixed exclusive access with completion. That is, we need to mark an object as
> > being flushed before flushing it to disk, and then block any other attempt to
> > flush it until the completion occurs.
>
> This sounds like mutex semantics. Why are the existing mutexes not
> appropriate for your needs?
Different threads doing wait and complete.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2008-06-26 11:31 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-26 4:41 [PATCH 0/6] Remove most users of semaphores from XFS Dave Chinner
2008-06-26 4:41 ` [PATCH 1/6] Extend completions to provide XFS object flush requirements Dave Chinner
2008-06-26 7:46 ` Christoph Hellwig
2008-06-26 11:21 ` Dave Chinner
2008-06-26 13:07 ` Christoph Hellwig
2008-06-26 13:18 ` Dave Chinner
2008-06-26 11:26 ` Matthew Wilcox
2008-06-26 11:32 ` Dave Chinner [this message]
2008-06-26 11:42 ` Matthew Wilcox
2008-06-26 12:21 ` Dave Chinner
2008-06-26 12:40 ` Matthew Wilcox
2008-06-26 12:49 ` Christoph Hellwig
2008-06-26 13:02 ` Dave Chinner
2008-06-26 20:33 ` Daniel Walker
2008-06-27 1:52 ` Dave Chinner
2008-06-27 2:24 ` Matthew Wilcox
2008-06-27 3:26 ` Daniel Walker
2008-06-27 9:15 ` Christoph Hellwig
2008-06-27 14:37 ` Daniel Walker
2008-06-26 4:41 ` [PATCH 2/6] Replace inode flush semaphore with a completion Dave Chinner
2008-06-27 2:30 ` Matthew Wilcox
2008-06-27 4:13 ` Dave Chinner
2008-06-26 4:41 ` [PATCH 3/6] Replace dquot " Dave Chinner
2008-06-26 4:41 ` [PATCH 4/6] Replace the XFS buf iodone " Dave Chinner
2008-06-26 7:41 ` Christoph Hellwig
2008-06-26 4:41 ` [PATCH 5/6] Remove the sema_t from XFS Dave Chinner
2008-06-26 4:41 ` [PATCH 6/6] Clean up stale references to semaphores Dave Chinner
2008-06-26 7:47 ` Christoph Hellwig
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