Re: [RFC][2/3] Account and control virtual address space allocations

[YAMAMOTO Takashi]

> diff -puN mm/swapfile.c~memory-controller-virtual-address-space-accounting-and-control mm/swapfile.c
> diff -puN mm/memory.c~memory-controller-virtual-address-space-accounting-and-control mm/memory.c
> --- linux-2.6.25-rc5/mm/memory.c~memory-controller-virtual-address-space-accounting-and-control	2008-03-16 22:57:40.000000000 +0530
> +++ linux-2.6.25-rc5-balbir/mm/memory.c	2008-03-16 22:57:40.000000000 +0530
> @@ -838,6 +838,11 @@ unsigned long unmap_vmas(struct mmu_gath
>  
>  		if (vma->vm_flags & VM_ACCOUNT)
>  			*nr_accounted += (end - start) >> PAGE_SHIFT;
> +		/*
> +		 * Unaccount used virtual memory for cgroups
> +		 */
> +		mem_cgroup_update_as(vma->vm_mm,
> +					((long)(start - end)) >> PAGE_SHIFT);
>  
>  		while (start != end) {
>  			if (!tlb_start_valid) {

i think you can sum and uncharge it with a single call.

YAMAMOTO Takashi
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