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SubjectRe: [PATCH] mm/hugetlb.c: remove dead store in demote_size_show()
On Sun, Oct 03, 2021 at 07:36:54PM -0700, Mike Kravetz wrote:
> On 10/3/21 6:54 AM, Matthew Wilcox wrote:
> > On Sun, Oct 03, 2021 at 06:41:13PM +0700, Nghia Le wrote:
> >> {
> >> struct hstate *h;
> >> - unsigned long demote_size;
> >> int nid;
> >>
> >> h = kobj_to_hstate(kobj, &nid);
> >> - demote_size = h->demote_order;
> >>
> >> return sysfs_emit(buf, "%lukB\n",
> >> (unsigned long)(PAGE_SIZE << h->demote_order) / SZ_1K);
> >
> > I'd suggest this function would look better written as:
> >
> > int nid;
> > struct hstate *h = kobj_to_hstate(kobj, &nid);
> > unsigned long demote_size = (PAGE_SIZE << h->demote_order) / SZ_1K;
> >
> > return sysfs_emit(buf, "%lukB\n", demote_size);
> >
Thanks Matthew for the clean code.
>
> Thank you Nghia Le for spotting this, and thank you Matthew for the
> suggestion.
>
> This is still just in Andrew's tree and subject to modification before
> the next merge window. I am still expecting additional comments on the
> series.
>
> If another version of the series is needed, I will include Matthew's
> suggestion. If not, I will ask Andrew how he would prefer to fold in
> the changes.
> --
> Mike Kravetz
Thanks Mike, so we will wait further comments from Andrew and others.

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