[PATCH] mm: decrease tlb flush pending count in tlb_finish_mmu

[Minchan Kim]

The tlb pending count increased by tlb_gather_mmu should be decreased
at tlb_finish_mmu. Otherwise, A lot of TLB happens which makes
performance regression.

Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
---
 mm/memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/memory.c b/mm/memory.c
index 34b1fcb829e4..ad2617552f55 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -423,6 +423,7 @@ void tlb_finish_mmu(struct mmu_gather *tlb,
 	bool force = mm_tlb_flush_nested(tlb->mm);
 
 	arch_tlb_finish_mmu(tlb, start, end, force);
+	dec_tlb_flush_pending(tlb->mm);
 }
 
 /*
-- 
2.7.4