From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Mason <chris.mason@oracle.com>
Subject: Re: new metadata reader/writer locks in integration-test
Date: Wed, 20 Jul 2011 13:21:47 -0400
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Cc: linux-btrfs <linux-btrfs@vger.kernel.org>
To: Chris Mason <chris.mason@oracle.com>
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Excerpts from Chris Mason's message of 2011-07-19 13:30:22 -0400:
> Hi everyone,
> 
> I've pushed out a new integration-test branch, and it includes a new
> reader/writer locking scheme for the btree locks.
> 
> We've seen a number of benchmarks dominated by contention on the root
> node lock.  This changes our locks into a simple reader/writer lock.
> They are based on mutexes so that we still take advantage of the mutex
> adaptive spins for write locks (rwsemaphores were much slower).
> 
> I'm also sending the individual commits, please do take a look.

Hi everyone,

I just rebased Josef's enospc fixes into integration-test, it should fix
the warnings in extent-tree.c


-chris