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Date: Wed, 25 May 2016 16:22:26 -0400
From: Chris Mason <clm@fb.com>
To: <dsterba@suse.cz>, Omar Sandoval <osandov@osandov.com>,
        <linux-btrfs@vger.kernel.org>, Al Viro <viro@zeniv.linux.org.uk>,
        <kernel-team@fb.com>, Omar Sandoval <osandov@fb.com>
Subject: Re: [PATCH] Btrfs: fix ->iterate_shared() by upgrading i_rwsem for
 delayed nodes
Message-ID: <20160525202226.djc7dk4uhzuleets@floor.thefacebook.com>
References: <1e937bd41beebb68b1bf1201205059cb8f614dad.1463777299.git.osandov@fb.com>
 <20160525201129.GQ29147@twin.jikos.cz>
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On Wed, May 25, 2016 at 10:11:29PM +0200, David Sterba wrote:
> On Fri, May 20, 2016 at 01:50:33PM -0700, Omar Sandoval wrote:
> > Commit fe742fd4f90f ("Revert "btrfs: switch to ->iterate_shared()"")
> > backed out the conversion to ->iterate_shared() for Btrfs because the
> > delayed inode handling in btrfs_real_readdir() is racy. However, we can
> > still do readdir in parallel if there are no delayed nodes.
> 
> So this is for current master (pre 4.7-rc1), I'll add an appropriate
> merge point for to my for-next.

I'll get this bashed on in a big stress.sh run, but it looks good to me.

-chris