diff options
| author | David Hildenbrand <david@redhat.com> | 2025-01-13 14:16:11 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-01-26 05:22:42 +0100 |
| commit | 89a41a0263293856678189981e5407375261c4ff (patch) | |
| tree | 222e5da4746be52302a61b93746643af7734bf6f /mm/hugetlb.c | |
| parent | mm/hugetlb-cgroup: convert hugetlb_cgroup_css_offline() to work on folios (diff) | |
| download | linux-89a41a0263293856678189981e5407375261c4ff.tar.xz linux-89a41a0263293856678189981e5407375261c4ff.zip | |
mm/hugetlb: use folio->lru int demote_free_hugetlb_folios()
We are demoting hugetlb folios to smaller hugetlb folios; let's avoid
messing with pages where avoidable and handle it more similar to
__split_huge_page_tail().
Link: https://lkml.kernel.org/r/20250113131611.2554758-7-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/hugetlb.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 308b0e3876b5..87761b042ed0 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3826,13 +3826,15 @@ static long demote_free_hugetlb_folios(struct hstate *src, struct hstate *dst, for (i = 0; i < pages_per_huge_page(src); i += pages_per_huge_page(dst)) { struct page *page = folio_page(folio, i); + /* Careful: see __split_huge_page_tail() */ + struct folio *new_folio = (struct folio *)page; - page->mapping = NULL; clear_compound_head(page); prep_compound_page(page, dst->order); - init_new_hugetlb_folio(dst, page_folio(page)); - list_add(&page->lru, &dst_list); + new_folio->mapping = NULL; + init_new_hugetlb_folio(dst, new_folio); + list_add(&new_folio->lru, &dst_list); } } |