diff options
| author |   Zi Yan <ziy@nvidia.com> | 2024-02-26 15:55:29 -0500 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-03-04 17:01:19 -0800 |
| commit | 502003bb76b83649cd4ff7f701987ac5cf43bc4b (patch) | |
| tree | 03f67714298d1650770b3dbbc3b7f73ab3e531f3 /mm/huge_memory.c | |
| parent | mm: support order-1 folios in the page cache (diff) | |
| download | wireguard-linux-502003bb76b83649cd4ff7f701987ac5cf43bc4b.tar.xz wireguard-linux-502003bb76b83649cd4ff7f701987ac5cf43bc4b.zip | |
mm/memcg: use order instead of nr in split_page_memcg()
We do not have non power of two pages, using nr is error prone if nr is
not power-of-two. Use page order instead.
Link: https://lkml.kernel.org/r/20240226205534.1603748-4-zi.yan@sent.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michal Koutny <mkoutny@suse.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 9840f312c08f..96ac7c62c375 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2889,11 +2889,12 @@ static void __split_huge_page(struct page *page, struct list_head *list, struct lruvec *lruvec; struct address_space *swap_cache = NULL; unsigned long offset = 0; - unsigned int nr = thp_nr_pages(head); int i, nr_dropped = 0; + int order = folio_order(folio); + unsigned int nr = 1 << order; /* complete memcg works before add pages to LRU */ - split_page_memcg(head, nr); + split_page_memcg(head, order); if (folio_test_anon(folio) && folio_test_swapcache(folio)) { offset = swp_offset(folio->swap); |