From 1fcf0a561cd09d7fb7f7afa2ddfe05f72f32050e Mon Sep 17 00:00:00 2001
From: Pingfan Liu <kernelfans@gmail.com>
Date: Thu, 11 Jul 2019 20:54:49 -0700
Subject: [PATCH] mm/page_isolation.c: change the prototype of
undo_isolate_page_range()
undo_isolate_page_range() never fails, so no need to return value.
Link: http://lkml.kernel.org/r/1562075604-8979-1-git-send-email-kernelfans@gmail.com
Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/page-isolation.h | 2 +-
mm/page_isolation.c | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h
index 280ae96dc4c3..1099c2fee20f 100644
--- a/include/linux/page-isolation.h
+++ b/include/linux/page-isolation.h
@@ -50,7 +50,7 @@ start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
* Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
* target range is [start_pfn, end_pfn)
*/
-int
+void
undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
unsigned migratetype);
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index e3638a5bafff..89c19c0feadb 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -230,7 +230,7 @@ undo:
/*
* Make isolated pages available again.
*/
-int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
+void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
unsigned migratetype)
{
unsigned long pfn;
@@ -247,7 +247,6 @@ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
continue;
unset_migratetype_isolate(page, migratetype);
}
- return 0;
}
/*
* Test all pages in the range is free(means isolated) or not.