From: zhong jiang <zhongjiang@huawei.com>
To: Michal Hocko <mhocko@kernel.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
<kirill.shutemov@linux.intel.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: fix account pmd page to the process
Date: Fri, 17 Jun 2016 20:01:24 +0800 [thread overview]
Message-ID: <5763E694.1050502@huawei.com> (raw)
In-Reply-To: <1466163941-12952-1-git-send-email-zhongjiang@huawei.com>
On 2016/6/17 19:45, zhongjiang wrote:
> From: zhong jiang <zhongjiang@huawei.com>
>
> hen a process acquire a pmd table shared by other process, we
> increase the account to current process. otherwise, a race result
> in other tasks have set the pud entry. so it no need to increase it.
>
> Signed-off-by: zhong jiang <zhongjiang@huawei.com>
> ---
> mm/hugetlb.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index 19d0d08..3072857 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -4191,7 +4191,7 @@ pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud)
> (pmd_t *)((unsigned long)spte & PAGE_MASK));
> } else {
> put_page(virt_to_page(spte));
> - mm_inc_nr_pmds(mm);
> + mm_dec_nr_pmds(mm);
> }
> spin_unlock(ptl);
> out:
next parent reply other threads:[~2016-06-17 12:01 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1466163941-12952-1-git-send-email-zhongjiang@huawei.com>
2016-06-17 12:01 ` zhong jiang [this message]
2016-06-17 11:56 [PATCH] mm: fix account pmd page to the process zhongjiang
2016-06-17 12:21 ` Michal Hocko
2016-06-17 13:04 ` zhong jiang
-- strict thread matches above, loose matches on Subject: below --
2016-06-16 11:36 zhongjiang
2016-06-16 15:42 ` Michal Hocko
2016-06-16 15:43 ` Michal Hocko
2016-06-16 16:05 ` Mike Kravetz
2016-06-16 16:31 ` Michal Hocko
2016-06-16 16:47 ` Mike Kravetz
2016-06-17 12:25 ` Kirill A. Shutemov
2016-06-17 13:00 ` Michal Hocko
2016-06-17 14:25 ` Kirill A. Shutemov
2016-06-17 15:39 ` Mike Kravetz
2016-06-18 5:07 ` zhong jiang
2016-06-17 11:18 ` zhong jiang
[not found] <1466076175-23444-1-git-send-email-zhongjiang@huawei.com>
2016-06-16 11:30 ` zhong jiang
2016-06-16 11:28 zhongjiang
2016-06-16 11:17 zhongjiang
2016-06-16 11:16 zhongjiang
2016-06-16 11:13 zhongjiang
2016-06-16 7:47 zhongjiang
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