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Re: [PATCH 1/6] Extend completions to provide XFS object flush requireme

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 1/6] Extend completions to provide XFS object flush requirements
From: Matthew Wilcox <matthew@xxxxxx>
Date: Thu, 26 Jun 2008 05:26:12 -0600
Cc: xfs@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <1214455277-6387-2-git-send-email-david@xxxxxxxxxxxxx>
References: <1214455277-6387-1-git-send-email-david@xxxxxxxxxxxxx> <1214455277-6387-2-git-send-email-david@xxxxxxxxxxxxx>
Sender: xfs-bounce@xxxxxxxxxxx
User-agent: Mutt/1.5.13 (2006-08-11)
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?

-- 
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."


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