memory hotplug: use macro to switch between section and pfn
Use macro section_nr_to_pfn() to switch between section and pfn, instead
of open-coding it. No semantic changes.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index af9c911..ab5c9a7 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -228,7 +228,7 @@
struct page *first_page;
int ret;
- start_pfn = phys_index << PFN_SECTION_SHIFT;
+ start_pfn = section_nr_to_pfn(phys_index);
first_page = pfn_to_page(start_pfn);
switch (action) {