linux-kernel - Re: [PATCH 1/2] btrfs: avoid passing int param to start

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Message-ID: <20150922130933.GD12815@twin.jikos.cz>
Date:	Tue, 22 Sep 2015 15:09:33 +0200
From:	David Sterba <dsterba@...e.cz>
To:	Alexandru Moise <00moses.alexander00@...il.com>
Cc:	clm@...com, jbacik@...com, dsterba@...e.com,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	holger.hoffstaette@...glemail.com
Subject: Re: [PATCH 1/2] btrfs: avoid passing int param to start_transaction
 which takes u64

On Sun, Sep 13, 2015 at 06:47:20PM +0000, Alexandru Moise wrote:
> Signed-off-by: Alexandru Moise <00moses.alexander00@...il.com>
> ---
> v2: Forgot to add transaction.h when I made the commit, many thanks
> Holger for pointing it out.
> 
>  fs/btrfs/transaction.c | 2 +-
>  fs/btrfs/transaction.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
> index 8f259b3..8a83acd 100644
> --- a/fs/btrfs/transaction.c
> +++ b/fs/btrfs/transaction.c
> @@ -570,7 +570,7 @@ reserve_fail:
>  }
>  
>  struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
> -						   int num_items)
> +						   u64 num_items)

I think it's better to do it the other way around, ie. let all the
equivalents of 'num_items' be an int. We know that this is a small
number, using u64 for that is an overkill. As the number is always
positive, please make it 'unsigned'.
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