Re: [PATCH 1/2] elf: simpler check for -EEXIST

[Michal Hocko]

On Fri 15-03-19 19:05:17, Alexey Dobriyan wrote:
> On Fri, Mar 15, 2019 at 07:02:23AM +0900, Tetsuo Handa wrote:
> > On 2019/03/15 5:42, Alexey Dobriyan wrote:
> > > 	PTR_ERR((void *)map_addr) == -EEXIST
> > > 
> > > is a very complicated way of doing the obvious.
> > 
> > Michal suggested me to explicitly use PTR_ERR()
> 
> without any explanation why...

The return value is ERR_PTR. This code uses unsigned long which is OK
but I thought it is better to call out the return value convention
explicitly. It is not like I would argue about that though.
-- 
Michal Hocko
SUSE Labs