Re: [PATCH] mm/damon/sysfs: change few functions execute order

[Andrew Morton <akpm@linux-foundation.org>]

On Thu,  8 Sep 2022 18:49:47 +0000 SeongJae Park <sj@kernel.org> wrote:

> Hi Xin,
> 
> On Thu, 8 Sep 2022 16:19:32 +0800 Xin Hao <xhao@linux.alibaba.com> wrote:
> 
> > These nr_{schemes,regions,contexts,kdamonds}_store() functions are both call
> 
> checkpatch complains as below:
> 
>     WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per line)
>     #10:
>     These nr_{schemes,regions,contexts,kdamonds}_store() functions are both call

I fix that sort of thing.  A lot ;)

> > kstrtoint() to get relative values from sysfs interface, if it return an
> > error, there get kobject instance would be meaningless through 'container_of'.
> 
> I was thinking the compiler could do that kind of optimization on its own, so I
> preferred to make the code shorter.

Yes, the compiler will do this.

> This change makes the code slightly longer, while the benefit of the change is
> unclear.  I'd like to keep it as is unless we get some clear benefit of this?

I find it a readability improvement.  Puts the initialization in a more
appropriate place and avoids those nasty tricks to prevent unreasonable
line lengths.