diff options
Diffstat (limited to 'fs/proc/page.c')
| -rw-r--r-- | fs/proc/page.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c index a55f5acefa97..23fc771100ae 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -67,9 +67,14 @@ static ssize_t kpagecount_read(struct file *file, char __user *buf, * memmaps that were actually initialized. */ page = pfn_to_online_page(pfn); - if (page) - mapcount = folio_precise_page_mapcount(page_folio(page), - page); + if (page) { + struct folio *folio = page_folio(page); + + if (IS_ENABLED(CONFIG_PAGE_MAPCOUNT)) + mapcount = folio_precise_page_mapcount(folio, page); + else + mapcount = folio_average_page_mapcount(folio); + } if (put_user(mapcount, out)) { ret = -EFAULT; |