The patch titled
memory-hotplug: don't calculate vm_total_pages twice when rebuilding zonelists in online_pages()
has been added to the -mm tree. Its filename is
memory-hotplug-dont-calculate-vm_total_pages-twice-when-rebuilding-zonelists-in-online_pages.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: memory-hotplug: don't calculate vm_total_pages twice when rebuilding zonelists in online_pages()
From: Kent Liu <kent.liu@xxxxxxxxxxxxxxx>
If zonelist is required to be rebuilt in online_pages(), there is no need
to recalculate vm_total_pages in that function, as it has been updated in
the call build_all_zonelists().
Signed-off-by: Kent Liu <kent.liu@xxxxxxxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN mm/memory_hotplug.c~memory-hotplug-dont-calculate-vm_total_pages-twice-when-rebuilding-zonelists-in-online_pages mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~memory-hotplug-dont-calculate-vm_total_pages-twice-when-rebuilding-zonelists-in-online_pages
+++ a/mm/memory_hotplug.c
@@ -429,7 +429,9 @@ int online_pages(unsigned long pfn, unsi
if (need_zonelists_rebuild)
build_all_zonelists();
- vm_total_pages = nr_free_pagecache_pages();
+ else
+ vm_total_pages = nr_free_pagecache_pages();
+
writeback_set_ratelimit();
if (onlined_pages)
_
Patches currently in -mm which might be from kent.liu@xxxxxxxxxxxxxxx are
memory-hotplug-dont-calculate-vm_total_pages-twice-when-rebuilding-zonelists-in-online_pages.patch
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