From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx> If THP is disabled, find_subpage can become a no-op. Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> --- include/linux/pagemap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 75bdfec49710..0842622cca90 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -340,7 +340,7 @@ static inline struct page *find_subpage(struct page *page, pgoff_t offset) VM_BUG_ON_PAGE(PageTail(page), page); - return page + (offset & (compound_nr(page) - 1)); + return page + (offset & (hpage_nr_pages(page) - 1)); } struct page *find_get_entry(struct address_space *mapping, pgoff_t offset); -- 2.25.0
