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Date:   Fri, 3 May 2019 10:21:05 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     David Sterba <dsterba@...e.cz>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Josef Bacik <josef@...icpanda.com>
Subject: linux-next: build warning after merge of the btrfs-kdave tree

Hi David,

After merging the btrfs-kdave tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

fs/btrfs/props.c: In function 'inherit_props':
fs/btrfs/props.c:389:4: warning: 'num_bytes' may be used uninitialized in this function [-Wmaybe-uninitialized]
    btrfs_block_rsv_release(fs_info, trans->block_rsv,
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      num_bytes);
      ~~~~~~~~~~

Probably introduced by commit

  b835a4a3faec ("btrfs: use the existing reserved items for our first prop for inheritance")

Looks like a false positive to me.

-- 
Cheers,
Stephen Rothwell

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