[dm-devel] Re: [PATCH 3/3] Add timeout feature

[Andrew Morton <akpm linux-foundation org>]

On Mon, 30 Jun 2008 08:13:07 +0900 "Takashi Sato" <t-sato yk jp nec com> wrote:

> > It's much better to use NULL here rather than literal zero because the
> > reader of this code can then say "ah-hah, we're passing in a pointer". 
> > Whereas plain old "0" could be a pointer or a scalar.
> 
> The second argument's type of freeze_bdev() is "long", not pointer as below.
> struct super_block *freeze_bdev(struct block_device *, long timeout_msec);

oh, ok, I goofed, sorry.

> So "0" is reasonable, isn't it?

yup.