commit cfc47a2803db42140167b92d991ef04018e162c7 upstream.
get_pageblock_migratetype() is called during free with IRQs disabled.
This is unnecessary and disables IRQs for longer than necessary.
Signed-off-by: Mel Gorman <mgor...@suse.de>
Acked-by: Rik van Riel <r...@redhat.com>
Cc: Johannes Weiner <han...@cmpxchg.org>
Acked-by: Vlastimil Babka <vba...@suse.cz>
Cc: Jan Kara <j...@suse.cz>
Cc: Michal Hocko <mho...@suse.cz>
Cc: Hugh Dickins <hu...@google.com>
Cc: Dave Hansen <dave.han...@intel.com>
Cc: Theodore Ts'o <ty...@mit.edu>
Cc: "Paul E. McKenney" <paul...@linux.vnet.ibm.com>
Cc: Oleg Nesterov <o...@redhat.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Mel Gorman <mgor...@suse.de>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b1b1522..478fcfe 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -760,9 +760,9 @@ static void __free_pages_ok(struct page *page, unsigned int
order)
if (!free_pages_prepare(page, order))
return;
+ migratetype = get_pfnblock_migratetype(page, pfn);
local_irq_save(flags);
__count_vm_events(PGFREE, 1 << order);
- migratetype = get_pfnblock_migratetype(page, pfn);
set_freepage_migratetype(page, migratetype);
free_one_page(page_zone(page), page, pfn, order, migratetype);
local_irq_restore(flags);
--
1.8.4.5
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