mm/memory_hotplug.c: use __pfn_to_section() instead of open-coding

Use __pfn_to_section() API instead of open-coding for better code
readability.

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Hildenbrand <david@redhat.com>
Link: http://lkml.kernel.org/r/1584345134-16671-1-git-send-email-qiwuchen55@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 2fb78c5ebaf335de6f5c7b16be5c294034b126da..635e8e2865988ea384ce5d8141c593af8666bdf0 100644 (file)
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -495,7 +495,7 @@ static void __remove_section(unsigned long pfn, unsigned long nr_pages,
                             unsigned long map_offset,
                             struct vmem_altmap *altmap)
 {
-       struct mem_section *ms = __nr_to_section(pfn_to_section_nr(pfn));
+       struct mem_section *ms = __pfn_to_section(pfn);
 
        if (WARN_ON_ONCE(!valid_section(ms)))
                return;