mm/page_isolation.c: remove redundant pfn_valid_within() in __first_v…

…alid_page() pfn_valid_within() calls pfn_valid() when CONFIG_HOLES_IN_ZONE making it redundant for both definitions (w/wo CONFIG_MEMORY_HOTPLUG) of the helper pfn_to_online_page() which either calls pfn_valid() or pfn_valid_within(). pfn_valid_within() being 1 when !CONFIG_HOLES_IN_ZONE is irrelevant either way. This does not change functionality. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Anshuman Khandual <[email protected]> Reviewed-by: Zi Yan <[email protected]> Reviewed-by: Oscar Salvador <[email protected]> Acked-by: Michal Hocko <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
heikomat · May 14, 2019 · 5e65af1 · 5e65af1
1 parent b6cfab7
commit 5e65af1
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
@@ -151,8 +151,6 @@ __first_valid_page(unsigned long pfn, unsigned long nr_pages)
 	for (i = 0; i < nr_pages; i++) {
 		struct page *page;
 
-		if (!pfn_valid_within(pfn + i))
-			continue;
 		page = pfn_to_online_page(pfn + i);
 		if (!page)
 			continue;