linux-kernel - Re: [NFS] 2.6.23-rc1-mm2

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Message-Id: <1186520929.6625.12.camel@heimdal.trondhjem.org>
Date:	Tue, 07 Aug 2007 17:08:48 -0400
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Oleg Nesterov <oleg@...sign.ru>, Neil Brown <neilb@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Marc Dietrich <Marc.Dietrich@...physik.uni-giessen.de>,
	Neil Brown <neilb@...e.de>,
	Johannes Berg <johannes@...solutions.net>,
	nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [NFS] 2.6.23-rc1-mm2

On Fri, 2007-08-03 at 21:21 +0400, Oleg Nesterov wrote:
> On 08/03, Trond Myklebust wrote:
> > I'll have a look at this. I suspect that most if not all of our calls to
> > run_workqueue()/flush_scheduled_work() can now be replaced by more
> > targeted calls to cancel_work_sync() and cancel_delayed_work_sync().
> 
> Yes, please, if possible.

All the NFS and SUNRPC cases appear to be trivial. IOW: the only reason
for the flush_workqueue()/flush_scheduled_work() calls was to ensure
that the cancel_work()/cancel_delayed_work() calls preceding them have
completed. Nevertheless I've split the conversion into two patches,
since one touches only the NFS code, whereas the other touches the
SUNRPC client and server code.

The two patches have been tested, and appear to work...

Trond



Download attachment "linux-2.6.23-007-nfs_dont_call_flush_workqueue.dif" of type "message/rfc822" (2421 bytes)

Download attachment "linux-2.6.23-008-sunrpc_dont_call_flush_workqueue.dif" of type "message/rfc822" (1400 bytes)