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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:

WARNING: multiple messages have this Message-ID (diff)
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:


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       reply	other threads:[~2016-06-17 12:01 UTC|newest]

Thread overview: 45+ 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 12:01   ` [PATCH] mm: fix account pmd page to the process zhong jiang
2016-06-17 11:56 zhongjiang
2016-06-17 11:56 ` zhongjiang
2016-06-17 12:21 ` Michal Hocko
2016-06-17 12:21   ` Michal Hocko
2016-06-17 13:04   ` zhong jiang
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 11:36 ` zhongjiang
2016-06-16 15:42 ` Michal Hocko
2016-06-16 15:42   ` Michal Hocko
2016-06-16 15:43   ` Michal Hocko
2016-06-16 15:43     ` Michal Hocko
2016-06-16 16:05     ` Mike Kravetz
2016-06-16 16:05       ` Mike Kravetz
2016-06-16 16:31       ` Michal Hocko
2016-06-16 16:31         ` Michal Hocko
2016-06-16 16:47         ` Mike Kravetz
2016-06-16 16:47           ` Mike Kravetz
2016-06-17 12:25           ` Kirill A. Shutemov
2016-06-17 12:25             ` Kirill A. Shutemov
2016-06-17 13:00             ` Michal Hocko
2016-06-17 13:00               ` Michal Hocko
2016-06-17 14:25               ` Kirill A. Shutemov
2016-06-17 14:25                 ` Kirill A. Shutemov
2016-06-17 15:39             ` Mike Kravetz
2016-06-17 15:39               ` Mike Kravetz
2016-06-18  5:07               ` zhong jiang
2016-06-18  5:07                 ` zhong jiang
2016-06-17 11:18   ` 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 11:30   ` zhong jiang
2016-06-16 11:28 zhongjiang
2016-06-16 11:28 ` zhongjiang
2016-06-16 11:17 zhongjiang
2016-06-16 11:17 ` zhongjiang
2016-06-16 11:16 zhongjiang
2016-06-16 11:16 ` zhongjiang
2016-06-16 11:13 zhongjiang
2016-06-16 11:13 ` zhongjiang
2016-06-16  7:47 zhongjiang
2016-06-16  7:47 ` zhongjiang
2016-06-15 14:48 zhongjiang

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