linux-kernel - Re: [PATCH AUTOSEL 5.6 051/129] btrfs: handle NULL roots in btrfs_put/btrfs_grab_fs

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Date:   Wed, 15 Apr 2020 15:22:24 +0200
From:   David Sterba <dsterba@...e.cz>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Josef Bacik <josef@...icpanda.com>,
        Nikolay Borisov <nborisov@...e.com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.6 051/129] btrfs: handle NULL roots in
 btrfs_put/btrfs_grab_fs_root

On Wed, Apr 15, 2020 at 07:33:26AM -0400, Sasha Levin wrote:
> From: Josef Bacik <josef@...icpanda.com>
> 
> [ Upstream commit 4cdfd93002cb84471ed85b4999cd38077a317873 ]
> 
> We want to use this for dropping all roots, and in some error cases we
> may not have a root, so handle this to make the cleanup code easier.
> Make btrfs_grab_fs_root the same so we can use it in cases where the
> root may not exist (like the quota root).

This is another patch from the preparatory series, not needed for
stable. Please drop it, thanks.