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Re: [PATCH] Remove l_flushsema

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH] Remove l_flushsema
From: David Chinner <dgc@xxxxxxx>
Date: Wed, 30 Apr 2008 21:34:18 +1000
Cc: David Chinner <dgc@xxxxxxx>, Matthew Wilcox <matthew@xxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20080430111521.GA16571@infradead.org>
References: <20080430090502.GH14976@parisc-linux.org> <20080430104125.GM108924158@sgi.com> <20080430105832.GA20442@infradead.org> <20080430111154.GO108924158@sgi.com> <20080430111521.GA16571@infradead.org>
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On Wed, Apr 30, 2008 at 07:15:21AM -0400, Christoph Hellwig wrote:
> On Wed, Apr 30, 2008 at 09:11:54PM +1000, David Chinner wrote:
> > > waitqueues are loked internally and don't need synchronization.  With
> > > a little bit of re-arranging the code the wake_up could probably be
> > > moved out of the critical section.
> > 
> > Yeah, I just realised that myself and was about to reply as such....
> > 
> > I'll move the wakeup outside the lock.
> Below is the version I have now.  One of the rare cases where using
> sv_t actually cleans up the code (althoug the whole sv_ family should
> probably loose some arguments).

Yep, much cleaner. Who's signoff goes on this?


Dave Chinner
Principal Engineer
SGI Australian Software Group

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