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

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Message-ID: <20150922133307.GA2369@gmail.com>
Date:	Tue, 22 Sep 2015 16:33:07 +0300
From:	Alexandru Moise <00moses.alexander00@...il.com>
To:	David Sterba <dsterba@...e.cz>
Cc:	clm@...com, jbacik@...com, linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] btrfs: avoid passing int param to start_transaction
 which takes u64

On Tue, Sep 22, 2015 at 03:09:33PM +0200, David Sterba wrote:
> 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'.

So you'd want it to be "unsigned int" or "u32"?
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