mm/memory_hotplug: remove for_each_valid_pfn() usage

When offlining memory, we know that the memory range has no holes.
Checking for valid pfns is not required.

Link: https://lkml.kernel.org/r/20260320-sparsemem_cleanups-v2-2-096addc8800d@kernel.org
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c427967c78bbc00f0b25ca7f57feebb3677a8308..504aa50e3c330c2dedd1f9e94e923c6fae9ea70d 100644 (file)
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1745,7 +1745,7 @@ static int scan_movable_pages(unsigned long start, unsigned long end,
 {
        unsigned long pfn;
 
-       for_each_valid_pfn(pfn, start, end) {
+       for (pfn = start; pfn < end; pfn++) {
                unsigned long nr_pages;
                struct page *page;
                struct folio *folio;
@@ -1795,7 +1795,7 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
        static DEFINE_RATELIMIT_STATE(migrate_rs, DEFAULT_RATELIMIT_INTERVAL,
                                      DEFAULT_RATELIMIT_BURST);
 
-       for_each_valid_pfn(pfn, start_pfn, end_pfn) {
+       for (pfn = start_pfn; pfn < end_pfn; pfn++) {
                struct page *page;
 
                page = pfn_to_page(pfn);