From: Christoph Hellwig <hch@infradead.org>
To: Peter Leckie <pleckie@sgi.com>, xfs@oss.sgi.com, xfs-dev@sgi.com
Subject: Re: [PATCH v2] Use atomic_t and wait_event to track dquot pincount
Date: Mon, 29 Sep 2008 17:45:24 -0400 [thread overview]
Message-ID: <20080929214524.GA12523@infradead.org> (raw)
In-Reply-To: <20080925010318.GB27997@disturbed>
On Thu, Sep 25, 2008 at 11:03:18AM +1000, Dave Chinner wrote:
> This is a similar situation - if the sv_t is broken, we need to
> replace all users, not just work around one symptom of the
> brokenness. This is expecially important as the remaining users
> of sv_t's are in the log for iclog synchronisation....
The sv_t is not broken per se but a quite dangerous primitive as
people can easily miss re-checking the condition after a wakeup.
After a quick check 5 out of 10 callers of sv_wait re-check their
condition, and most do in a quite broad loop. It might make sense
to just that lille bit of code and use prepare_wait / finish_wait
explicitly.
next prev parent reply other threads:[~2008-09-29 21:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-24 4:28 [PATCH] Use atomic_t and wait_event to track dquot pincount Peter Leckie
2008-09-24 6:05 ` Dave Chinner
2008-09-24 6:53 ` Peter Leckie
2008-09-24 7:43 ` Dave Chinner
2008-09-24 7:26 ` [PATCH v2] " Peter Leckie
2008-09-24 7:42 ` Lachlan McIlroy
2008-09-24 7:46 ` Dave Chinner
2008-09-24 8:03 ` Lachlan McIlroy
2008-09-24 14:42 ` Christoph Hellwig
2008-09-24 8:15 ` Peter Leckie
2008-09-25 1:03 ` Dave Chinner
2008-09-25 8:43 ` Peter Leckie
2008-09-25 9:12 ` Christoph Hellwig
2008-09-26 0:34 ` Dave Chinner
2008-09-26 1:09 ` Peter Leckie
2008-09-26 1:26 ` Lachlan McIlroy
2008-09-27 1:08 ` Dave Chinner
2008-09-26 1:32 ` Lachlan McIlroy
2008-09-26 1:38 ` Peter Leckie
2008-09-26 1:44 ` Mark Goodwin
2008-09-26 1:54 ` Peter Leckie
2008-09-26 11:31 ` Christoph Hellwig
2008-09-26 2:57 ` Dave Chinner
2008-09-26 3:38 ` Lachlan McIlroy
2008-09-27 1:11 ` Dave Chinner
2008-09-26 11:30 ` Christoph Hellwig
2008-09-26 11:27 ` Christoph Hellwig
2008-09-27 1:18 ` Dave Chinner
2008-09-26 1:10 ` Lachlan McIlroy
2008-09-26 11:28 ` Christoph Hellwig
2008-09-29 3:08 ` Lachlan McIlroy
2008-09-29 21:45 ` Christoph Hellwig [this message]
2008-09-24 14:41 ` Christoph Hellwig
2008-09-25 1:08 ` Dave Chinner
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