"Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx> writes: > Ask the page how many subpages it has instead of assuming it's PMD size. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> > --- > mm/huge_memory.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/huge_memory.c b/mm/huge_memory.c > index e9503b10df8f..8bf8caf66923 100644 > --- a/mm/huge_memory.c > +++ b/mm/huge_memory.c > @@ -2546,9 +2546,9 @@ bool can_split_huge_page(struct page *page, int *pextra_pins) > > /* Additional pins from page cache */ > if (PageAnon(page)) > - extra_pins = PageSwapCache(page) ? HPAGE_PMD_NR : 0; > + extra_pins = PageSwapCache(page) ? thp_nr_pages(page) : 0; > else > - extra_pins = HPAGE_PMD_NR; > + extra_pins = thp_nr_pages(page); > if (pextra_pins) > *pextra_pins = extra_pins; > return total_mapcount(page) == page_count(page) - extra_pins - 1; Acked-by: "Huang, Ying" <ying.huang@xxxxxxxxx> Best Regards, Huang, Ying
