[PATCH v1 01/11] mm/memory_hotplug: inline __offline_pages() into offline_pages()

From: David Hildenbrand
Date: Wed Aug 19 2020 - 06:12:17 EST


There is only a single user, offline_pages(). Let's inline, to make
it look more similar to online_pages().

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Pankaj Gupta <pankaj.gupta.linux@xxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
mm/memory_hotplug.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7f62d69660e06..c781d386d87f9 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1473,11 +1473,10 @@ static int count_system_ram_pages_cb(unsigned long start_pfn,
return 0;
}

-static int __ref __offline_pages(unsigned long start_pfn,
- unsigned long end_pfn)
+int __ref offline_pages(unsigned long start_pfn, unsigned long nr_pages)
{
- unsigned long pfn, nr_pages = 0;
- unsigned long offlined_pages = 0;
+ const unsigned long end_pfn = start_pfn + nr_pages;
+ unsigned long pfn, system_ram_pages = 0, offlined_pages = 0;
int ret, node, nr_isolate_pageblock;
unsigned long flags;
struct zone *zone;
@@ -1494,9 +1493,9 @@ static int __ref __offline_pages(unsigned long start_pfn,
* memory holes PG_reserved, don't need pfn_valid() checks, and can
* avoid using walk_system_ram_range() later.
*/
- walk_system_ram_range(start_pfn, end_pfn - start_pfn, &nr_pages,
+ walk_system_ram_range(start_pfn, nr_pages, &system_ram_pages,
count_system_ram_pages_cb);
- if (nr_pages != end_pfn - start_pfn) {
+ if (system_ram_pages != nr_pages) {
ret = -EINVAL;
reason = "memory holes";
goto failed_removal;
@@ -1631,11 +1630,6 @@ static int __ref __offline_pages(unsigned long start_pfn,
return ret;
}

-int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
-{
- return __offline_pages(start_pfn, start_pfn + nr_pages);
-}
-
static int check_memblock_offlined_cb(struct memory_block *mem, void *arg)
{
int ret = !is_memblock_offlined(mem);
--
2.26.2