memcg: coalesce uncharge during unmap/truncate

[pandora-kernel.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index a54b2c4..aed45ea 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -956,6 +956,7 @@ static unsigned long unmap_page_range(struct mmu_gather *tlb,
                details = NULL;
 
        BUG_ON(addr >= end);
+       mem_cgroup_uncharge_start();
        tlb_start_vma(tlb, vma);
        pgd = pgd_offset(vma->vm_mm, addr);
        do {
@@ -968,6 +969,7 @@ static unsigned long unmap_page_range(struct mmu_gather *tlb,
                                                zap_work, details);
        } while (pgd++, addr = next, (addr != end && *zap_work > 0));
        tlb_end_vma(tlb, vma);
+       mem_cgroup_uncharge_end();
 
        return addr;
 }