linux-kernel - Re: [PATCH] btrfs: fix size

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Message-ID: <20180717150400.GA3126@twin.jikos.cz>
Date:   Tue, 17 Jul 2018 17:04:00 +0200
From:   David Sterba <dsterba@...e.cz>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>, Qu Wenruo <wqu@...e.com>,
        Nikolay Borisov <nborisov@...e.com>,
        Su Yue <suy.fnst@...fujitsu.com>, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: fix size_t format string

On Tue, Jul 17, 2018 at 03:52:27PM +0200, Arnd Bergmann wrote:
> The newly added check_block_group_item() function causes a build warning
> on 32-bit architectures:
> 
> fs/btrfs/tree-checker.c: In function 'check_block_group_item':
> fs/btrfs/tree-checker.c:404:41: error: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'unsigned int' [-Werror=format=]
> 
> The type of a sizeof() expression is size_t, which is correctly printed
> using the %zu format string.
> 
> Fixes: 9dc16aad5660 ("btrfs: tree-checker: Verify block_group_item")

Folded to the commit, thanks.