The patch titled
Subject: mm, memory_hotplug: drop pointless block alignment checks from __offline_pages
has been added to the -mm tree. Its filename is
mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages.patch
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------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxxx>
Subject: mm, memory_hotplug: drop pointless block alignment checks from __offline_pages
This function is never called from a context which would provide
misaligned pfn range so drop the pointless check.
Link: http://lkml.kernel.org/r/20181107101830.17405-4-mhocko@xxxxxxxxxx
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Oscar Salvador <OSalvador@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 6 ------
1 file changed, 6 deletions(-)
--- a/mm/memory_hotplug.c~mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages
+++ a/mm/memory_hotplug.c
@@ -1554,12 +1554,6 @@ static int __ref __offline_pages(unsigne
struct zone *zone;
struct memory_notify arg;
- /* at least, alignment against pageblock is necessary */
- if (!IS_ALIGNED(start_pfn, pageblock_nr_pages))
- return -EINVAL;
- if (!IS_ALIGNED(end_pfn, pageblock_nr_pages))
- return -EINVAL;
-
mem_hotplug_begin();
/* This makes hotplug much easier...and readable.
_
Patches currently in -mm which might be from mhocko@xxxxxxxx are
mm-memory_hotplug-check-zone_movable-in-has_unmovable_pages.patch
mm-print-more-information-about-mapping-in-__dump_page.patch
mm-lower-the-printk-loglevel-for-__dump_page-messages.patch
mm-memory_hotplug-drop-pointless-block-alignment-checks-from-__offline_pages.patch
mm-memory_hotplug-print-reason-for-the-offlining-failure.patch
mm-memory_hotplug-be-more-verbose-for-memory-offline-failures.patch
