The patch titled
Subject: mm/page_isolation.c: change the prototype of undo_isolate_page_range()
has been added to the -mm tree. Its filename is
mm-page_isolate-change-the-prototype-of-undo_isolate_page_range.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_isolate-change-the-prototype-of-undo_isolate_page_range.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_isolate-change-the-prototype-of-undo_isolate_page_range.patch
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------------------------------------------------------
From: Pingfan Liu <kernelfans@xxxxxxxxx>
Subject: 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@xxxxxxxxx
Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Qian Cai <cai@xxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page-isolation.h | 2 +-
mm/page_isolation.c | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)
--- a/include/linux/page-isolation.h~mm-page_isolate-change-the-prototype-of-undo_isolate_page_range
+++ a/include/linux/page-isolation.h
@@ -50,7 +50,7 @@ start_isolate_page_range(unsigned long s
* 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);
--- a/mm/page_isolation.c~mm-page_isolate-change-the-prototype-of-undo_isolate_page_range
+++ a/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 lon
continue;
unset_migratetype_isolate(page, migratetype);
}
- return 0;
}
/*
* Test all pages in the range is free(means isolated) or not.
_
Patches currently in -mm which might be from kernelfans@xxxxxxxxx are
mm-page_isolate-change-the-prototype-of-undo_isolate_page_range.patch
mm-gup-speed-up-check_and_migrate_cma_pages-on-huge-page.patch
