Re: [RFC v3 PATCH 3/5] mm: refactor do_munmap() to extract the common part

[Yang Shi]

On 7/2/18 10:58 AM, Michal Hocko wrote:
> On Mon 02-07-18 09:59:06, Yang Shi wrote:
> > On 7/2/18 6:42 AM, Michal Hocko wrote:
> > > On Sat 30-06-18 06:39:43, Yang Shi wrote:
> > > > Introduces two new helper functions:
> > > >     * munmap_addr_sanity()
> > > >     * munmap_lookup_vma()
> > > >
> > > > They will be used by do_munmap() and the new do_munmap with zapping
> > > > large mapping early in the later patch.
> > > >
> > > > There is no functional change, just code refactor.
> > > There are whitespace changes which make the code much harder to review
> > > than necessary.
> > > > +static inline bool munmap_addr_sanity(unsigned long start, size_t len)
> > > >    {
> > > > -	unsigned long end;
> > > > -	struct vm_area_struct *vma, *prev, *last;
> > > > +	if ((offset_in_page(start)) || start > TASK_SIZE || len > TASK_SIZE - start)
> > > > +		return false;
> > > > -	if ((offset_in_page(start)) || start > TASK_SIZE || len > TASK_SIZE-start)
> > > > -		return -EINVAL;
> > > e.g. here.
> > Oh, yes. I did some coding style cleanup too.
> If you want to do some coding style cleanups make them a separate patch.
> The resulting diff would be much easier to review.

Sure, thanks

>