The patch titled
Subject: mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages()
has been removed from the -mm tree. Its filename was
mm-memory_hotplug-drop-nr_isolate_pageblock-in-offline_pages.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages()
We make sure that we cannot have any memory holes right at the beginning
of offline_pages() and we only support to online/offline full sections.
Both, sections and pageblocks are a power of two in size, and sections
always span full pageblocks.
We can directly calculate the number of isolated pageblocks from nr_pages.
Link: https://lkml.kernel.org/r/20200819175957.28465-6-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Pankaj Gupta <pankaj.gupta.linux@xxxxxxxxx>
Cc: Charan Teja Reddy <charante@xxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Michel Lespinasse <walken@xxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/mm/memory_hotplug.c~mm-memory_hotplug-drop-nr_isolate_pageblock-in-offline_pages
+++ a/mm/memory_hotplug.c
@@ -1471,10 +1471,10 @@ int __ref offline_pages(unsigned long st
{
const unsigned long end_pfn = start_pfn + nr_pages;
unsigned long pfn, system_ram_pages = 0;
- int ret, node, nr_isolate_pageblock;
unsigned long flags;
struct zone *zone;
struct memory_notify arg;
+ int ret, node;
char *reason;
/* We can only offline full sections (e.g., SECTION_IS_ONLINE) */
@@ -1518,7 +1518,6 @@ int __ref offline_pages(unsigned long st
reason = "failure to isolate range";
goto failed_removal;
}
- nr_isolate_pageblock = ret;
arg.start_pfn = start_pfn;
arg.nr_pages = nr_pages;
@@ -1596,7 +1595,7 @@ int __ref offline_pages(unsigned long st
* pageblocks zone counter here.
*/
spin_lock_irqsave(&zone->lock, flags);
- zone->nr_isolate_pageblock -= nr_isolate_pageblock;
+ zone->nr_isolate_pageblock -= nr_pages / pageblock_nr_pages;
spin_unlock_irqrestore(&zone->lock, flags);
/* removal success */
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
