lkml.org 
[lkml]   [2013]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCHv2, RFC 23/30] thp: prepare zap_huge_pmd() to uncharge file pages
From
On Fri, Mar 15, 2013 at 1:50 AM, Kirill A. Shutemov
<kirill.shutemov@linux.intel.com> wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
>
> Uncharge pages from correct counter.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> ---
> mm/huge_memory.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index a23da8b..34e0385 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -1368,10 +1368,12 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
> spin_unlock(&tlb->mm->page_table_lock);
> put_huge_zero_page();
> } else {
> + int counter;
s/counter/item/ ?

> page = pmd_page(orig_pmd);
> page_remove_rmap(page);
> VM_BUG_ON(page_mapcount(page) < 0);
> - add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR);
> + counter = PageAnon(page) ? MM_ANONPAGES : MM_FILEPAGES;
> + add_mm_counter(tlb->mm, counter, -HPAGE_PMD_NR);
> VM_BUG_ON(!PageHead(page));
> tlb->mm->nr_ptes--;
> spin_unlock(&tlb->mm->page_table_lock);
> --
> 1.7.10.4
>


\
 
 \ /
  Last update: 2013-03-15 08:44    [W:0.626 / U:0.428 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site