Re: [PATCH] jbd/jbd2: add pointer type conversion on void *arg from void * to journal_t * explicitly in kjournald/kjournald2

Américo Wang
2011-08-03T02:52:48Z

On Wed, Aug 3, 2011 at 10:17 AM, Wang Sheng-Hui <shhuiw@gmail.com> wrote:
>
> I remember any * can be assigned directly to void * in ANSI C, but
> void * should be converted to specific point * type. Right?
>

C99 6.3.2.3

A pointer to void may be converted to or from a pointer to any
incomplete or object
type. A pointer to any incomplete or object type may be converted to a
pointer to void
and back again; the result shall compare equal to the original pointer.