Messages in this thread | | | Subject | Re: [RFC PATCH 4/4] mm, hugetlb, soft_offline: use new_page_nodemask for soft offline migration | From | Vlastimil Babka <> | Date | Wed, 14 Jun 2017 18:22:21 +0200 |
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On 06/13/2017 11:00 AM, Michal Hocko wrote: > From: Michal Hocko <mhocko@suse.com> > > new_page is yet another duplication of the migration callback which has > to handle hugetlb migration specially. We can safely use the generic > new_page_nodemask for the same purpose. > > Please note that gigantic hugetlb pages do not need any special handling > because alloc_huge_page_nodemask will make sure to check pages in all > per node pools. The reason this was done previously was that > alloc_huge_page_node treated NO_NUMA_NODE and a specific node > differently and so alloc_huge_page_node(nid) would check on this > specific node. > > Noticed-by: Vlastimil Babka <vbabka@suse.cz> > Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
> --- > mm/memory-failure.c | 10 +--------- > 1 file changed, 1 insertion(+), 9 deletions(-) > > diff --git a/mm/memory-failure.c b/mm/memory-failure.c > index 3615bffbd269..7040f60ecb71 100644 > --- a/mm/memory-failure.c > +++ b/mm/memory-failure.c > @@ -1487,16 +1487,8 @@ EXPORT_SYMBOL(unpoison_memory); > static struct page *new_page(struct page *p, unsigned long private, int **x) > { > int nid = page_to_nid(p); > - if (PageHuge(p)) { > - struct hstate *hstate = page_hstate(compound_head(p)); > > - if (hstate_is_gigantic(hstate)) > - return alloc_huge_page_node(hstate, NUMA_NO_NODE); > - > - return alloc_huge_page_node(hstate, nid); > - } else { > - return __alloc_pages_node(nid, GFP_HIGHUSER_MOVABLE, 0); > - } > + return new_page_nodemask(p, nid, &node_states[N_MEMORY]); > } > > /* >
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