From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Michal Hocko <mhocko@suse.cz>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Hugh Dickins <hughd@google.com>,
Davidlohr Bueso <davidlohr.bueso@hp.com>,
David Gibson <david@gibson.dropbear.id.au>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Joonsoo Kim <js1304@gmail.com>,
Wanpeng Li <liwanp@linux.vnet.ibm.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Hillf Danton <dhillf@gmail.com>
Subject: Re: [PATCH v2 04/20] mm, hugetlb: remove useless check about mapping type
Date: Wed, 21 Aug 2013 15:00:24 +0530 [thread overview]
Message-ID: <87siy3gzm7.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <1376040398-11212-5-git-send-email-iamjoonsoo.kim@lge.com>
Joonsoo Kim <iamjoonsoo.kim@lge.com> writes:
> is_vma_resv_set(vma, HPAGE_RESV_OWNER) implys that this mapping is
> for private. So we don't need to check whether this mapping is for
> shared or not.
>
> This patch is just for clean-up.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
>
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index ea1ae0a..c017c52 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -2544,8 +2544,7 @@ retry_avoidcopy:
> * at the time of fork() could consume its reserves on COW instead
> * of the full address range.
> */
> - if (!(vma->vm_flags & VM_MAYSHARE) &&
> - is_vma_resv_set(vma, HPAGE_RESV_OWNER) &&
> + if (is_vma_resv_set(vma, HPAGE_RESV_OWNER) &&
> old_page != pagecache_page)
> outside_reserve = 1;
>
> --
> 1.7.9.5
--
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next prev parent reply other threads:[~2013-08-21 9:30 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-09 9:26 [PATCH v2 00/20] mm, hugetlb: remove a hugetlb_instantiation_mutex Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 01/20] mm, hugetlb: protect reserved pages when soft offlining a hugepage Joonsoo Kim
2013-08-12 13:20 ` Davidlohr Bueso
2013-08-09 9:26 ` [PATCH v2 02/20] mm, hugetlb: change variable name reservations to resv Joonsoo Kim
2013-08-12 13:21 ` Davidlohr Bueso
2013-08-09 9:26 ` [PATCH v2 03/20] mm, hugetlb: fix subpool accounting handling Joonsoo Kim
2013-08-21 9:28 ` Aneesh Kumar K.V
2013-08-22 6:50 ` Joonsoo Kim
2013-08-22 7:08 ` Aneesh Kumar K.V
2013-08-22 7:47 ` Joonsoo Kim
2013-08-26 13:01 ` Aneesh Kumar K.V
2013-08-27 7:40 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 04/20] mm, hugetlb: remove useless check about mapping type Joonsoo Kim
2013-08-12 13:31 ` Davidlohr Bueso
2013-08-21 9:30 ` Aneesh Kumar K.V [this message]
2013-08-09 9:26 ` [PATCH v2 05/20] mm, hugetlb: grab a page_table_lock after page_cache_release Joonsoo Kim
2013-08-12 13:35 ` Davidlohr Bueso
2013-08-21 9:31 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 06/20] mm, hugetlb: return a reserved page to a reserved pool if failed Joonsoo Kim
2013-08-21 9:54 ` Aneesh Kumar K.V
2013-08-22 6:51 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 07/20] mm, hugetlb: unify region structure handling Joonsoo Kim
2013-08-21 9:57 ` Aneesh Kumar K.V
2013-08-22 6:56 ` Joonsoo Kim
2013-08-21 10:22 ` Aneesh Kumar K.V
2013-08-22 6:53 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 08/20] mm, hugetlb: region manipulation functions take resv_map rather list_head Joonsoo Kim
2013-08-21 9:58 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 09/20] mm, hugetlb: protect region tracking via newly introduced resv_map lock Joonsoo Kim
2013-08-12 22:03 ` Davidlohr Bueso
2013-08-13 7:45 ` Joonsoo Kim
2013-08-21 10:13 ` Aneesh Kumar K.V
2013-08-22 6:59 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 10/20] mm, hugetlb: remove resv_map_put() Joonsoo Kim
2013-08-21 10:49 ` Aneesh Kumar K.V
2013-08-22 7:24 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 11/20] mm, hugetlb: make vma_resv_map() works for all mapping type Joonsoo Kim
2013-08-21 10:37 ` Aneesh Kumar K.V
2013-08-22 7:25 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 12/20] mm, hugetlb: remove vma_has_reserves() Joonsoo Kim
2013-08-22 8:44 ` Aneesh Kumar K.V
2013-08-22 9:17 ` Joonsoo Kim
2013-08-22 11:04 ` Aneesh Kumar K.V
2013-08-23 6:16 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 13/20] mm, hugetlb: mm, hugetlb: unify chg and avoid_reserve to use_reserve Joonsoo Kim
2013-08-26 13:09 ` Aneesh Kumar K.V
2013-08-27 7:57 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 14/20] mm, hugetlb: call vma_needs_reservation before entering alloc_huge_page() Joonsoo Kim
2013-08-26 13:36 ` Aneesh Kumar K.V
2013-08-26 13:46 ` Aneesh Kumar K.V
2013-08-27 7:58 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 15/20] mm, hugetlb: remove a check for return value of alloc_huge_page() Joonsoo Kim
2013-08-26 13:38 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 16/20] mm, hugetlb: move down outside_reserve check Joonsoo Kim
2013-08-26 13:44 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 17/20] mm, hugetlb: move up anon_vma_prepare() Joonsoo Kim
2013-08-26 14:09 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 18/20] mm, hugetlb: clean-up error handling in hugetlb_cow() Joonsoo Kim
2013-08-26 14:12 ` Aneesh Kumar K.V
2013-08-09 9:26 ` [PATCH v2 19/20] mm, hugetlb: retry if failed to allocate and there is concurrent user Joonsoo Kim
2013-09-04 8:44 ` Joonsoo Kim
2013-09-05 1:16 ` David Gibson
2013-09-05 1:15 ` David Gibson
2013-09-05 5:43 ` Joonsoo Kim
2013-09-16 12:09 ` David Gibson
2013-09-30 7:47 ` Joonsoo Kim
2013-12-09 16:36 ` Davidlohr Bueso
2013-12-10 8:32 ` Joonsoo Kim
2013-08-09 9:26 ` [PATCH v2 20/20] mm, hugetlb: remove a hugetlb_instantiation_mutex Joonsoo Kim
2013-08-14 23:22 ` [PATCH v2 00/20] " Andrew Morton
2013-08-16 17:18 ` JoonSoo Kim
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