linux-kernel - Re: [PATCH v6 85/99] btrfs: Remove unused spinlock

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Message-ID: <20180118142234.GK13726@twin.jikos.cz>
Date:   Thu, 18 Jan 2018 15:22:34 +0100
From:   David Sterba <dsterba@...e.cz>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Matthew Wilcox <mawilcox@...rosoft.com>, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-nilfs@...r.kernel.org, linux-btrfs@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-usb@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stefano Stabellini <sstabellini@...nel.org>,
        iommu@...ts.linux-foundation.org, linux-remoteproc@...r.kernel.org,
        linux-s390@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        cgroups@...r.kernel.org, linux-sh@...r.kernel.org,
        David Howells <dhowells@...hat.com>
Subject: Re: [PATCH v6 85/99] btrfs: Remove unused spinlock

On Wed, Jan 17, 2018 at 12:21:49PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox <mawilcox@...rosoft.com>
> 
> The reada_lock in struct btrfs_device was only initialised, and not
> actually used.  That's good because there's another lock also called
> reada_lock in the btrfs_fs_info that was quite heavily used.  Remove
> this one.
> 
> Signed-off-by: Matthew Wilcox <mawilcox@...rosoft.com>

I'll pick this one now, thanks.