From: "Wang, Haiyue" <haiyue.wang@intel.com>
To: "Huang, Ying" <ying.huang@intel.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"david@redhat.com" <david@redhat.com>,
"linmiaohe@huawei.com" <linmiaohe@huawei.com>,
"songmuchun@bytedance.com" <songmuchun@bytedance.com>,
"naoya.horiguchi@linux.dev" <naoya.horiguchi@linux.dev>,
"alex.sierra@amd.com" <alex.sierra@amd.com>,
Felix Kuehling <Felix.Kuehling@amd.com>,
Alistair Popple <apopple@nvidia.com>
Subject: RE: [PATCH v3 2/2] mm: fix the handling Non-LRU pages returned by follow_page
Date: Mon, 15 Aug 2022 01:46:59 +0000 [thread overview]
Message-ID: <BYAPR11MB34957681936F3AD544E9BB5DF7689@BYAPR11MB3495.namprd11.prod.outlook.com> (raw)
In-Reply-To: <87czd2e13k.fsf@yhuang6-desk2.ccr.corp.intel.com>
> -----Original Message-----
> From: Huang, Ying <ying.huang@intel.com>
> Sent: Monday, August 15, 2022 09:40
> To: Wang, Haiyue <haiyue.wang@intel.com>
> Cc: linux-mm@kvack.org; linux-kernel@vger.kernel.org; akpm@linux-foundation.org; david@redhat.com;
> linmiaohe@huawei.com; songmuchun@bytedance.com; naoya.horiguchi@linux.dev; alex.sierra@amd.com; Felix
> Kuehling <Felix.Kuehling@amd.com>; Alistair Popple <apopple@nvidia.com>
> Subject: Re: [PATCH v3 2/2] mm: fix the handling Non-LRU pages returned by follow_page
>
> Haiyue Wang <haiyue.wang@intel.com> writes:
>
> > The page returned by follow_page with 'FOLL_GET' has get_page called, so
>
> Better to add "()" after function name to improve the readability, for
> example, "follow_page()".
Got it, didn't notice this. ;-)
>
> > it needs to call put_page for handling the reference count correctly.
> >
> > And as David reviewed, "device pages are never PageKsm pages". Drop this
> > zone device page check for break_ksm.
> >
> > Fixes: 3218f8712d6b ("mm: handling Non-LRU pages returned by vm_normal_pages")
>
> In your patch description, I cannot find how the above commit is related
> to the bug you fixed. Add some words about that?
The first commit session, but maybe not very clear, will try to add more words
In v4.
>
> Best Regards,
> Huang, Ying
>
> > Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
> > ---
> > mm/huge_memory.c | 4 ++--
> > mm/ksm.c | 12 +++++++++---
> > mm/migrate.c | 10 +++++++---
> > 3 files changed, 18 insertions(+), 8 deletions(-)
> >
next prev parent reply other threads:[~2022-08-15 1:47 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-12 8:49 [PATCH v1] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-13 23:28 ` Andrew Morton
2022-08-14 6:20 ` Wang, Haiyue
2022-08-14 6:49 ` Wang, Haiyue
2022-08-14 14:05 ` [PATCH v2 0/3] fix follow_page related issues Haiyue Wang
2022-08-14 14:05 ` [PATCH v2 1/3] mm: revert handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-14 16:30 ` David Hildenbrand
2022-08-15 1:02 ` Wang, Haiyue
2022-08-14 14:05 ` [PATCH v2 2/3] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-14 14:05 ` [PATCH v2 3/3] mm: handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-14 16:34 ` David Hildenbrand
2022-08-15 1:03 ` Wang, Haiyue
2022-08-15 1:03 ` [PATCH v3 0/2] fix follow_page related issues Haiyue Wang
2022-08-15 1:03 ` [PATCH v3 1/2] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-15 1:59 ` Huang, Ying
2022-08-15 2:10 ` Wang, Haiyue
2022-08-15 2:15 ` Wang, Haiyue
2022-08-15 2:51 ` Huang, Ying
2022-08-15 1:03 ` [PATCH v3 2/2] mm: fix the handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-15 1:39 ` Huang, Ying
2022-08-15 1:46 ` Wang, Haiyue [this message]
2022-08-15 1:59 ` [PATCH v4 0/2] fix follow_page related issues Haiyue Wang
2022-08-15 1:59 ` [PATCH v4 1/2] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-15 4:28 ` Alistair Popple
2022-08-15 4:40 ` Wang, Haiyue
2022-08-15 5:16 ` Alistair Popple
2022-08-15 5:20 ` Wang, Haiyue
2022-08-15 5:35 ` Alistair Popple
2022-08-15 5:37 ` Wang, Haiyue
2022-08-15 1:59 ` [PATCH v4 2/2] mm: fix the handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-15 7:02 ` [PATCH v5 0/2] fix follow_page related issues Haiyue Wang
2022-08-15 7:02 ` [PATCH v5 1/2] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-15 7:40 ` Huang, Ying
2022-08-15 7:02 ` [PATCH v5 2/2] mm: fix the handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-15 7:50 ` Huang, Ying
2022-08-15 14:28 ` Felix Kuehling
2022-08-16 0:00 ` Alistair Popple
2022-08-16 1:12 ` Wang, Haiyue
2022-08-16 2:45 ` Alistair Popple
2022-08-16 2:20 ` [PATCH v6 0/2] fix follow_page related issues Haiyue Wang
2022-08-16 2:21 ` [PATCH v6 1/2] mm: migration: fix the FOLL_GET failure on following huge page Haiyue Wang
2022-08-16 8:54 ` Baolin Wang
2022-08-17 0:58 ` Andrew Morton
2022-08-17 3:31 ` Wang, Haiyue
2022-08-17 5:43 ` Andrew Morton
2022-08-17 5:47 ` Wang, Haiyue
2022-08-17 17:26 ` Mike Kravetz
2022-08-17 21:58 ` Mike Kravetz
2022-08-18 0:32 ` Wang, Haiyue
2022-08-19 11:22 ` Michael Ellerman
2022-08-19 16:55 ` Mike Kravetz
2022-08-26 13:07 ` Michael Ellerman
2022-08-18 11:51 ` Gerald Schaefer
2022-08-18 11:57 ` Gerald Schaefer
2022-08-17 2:12 ` Miaohe Lin
2022-08-16 2:21 ` [PATCH v6 2/2] mm: fix the handling Non-LRU pages returned by follow_page Haiyue Wang
2022-08-16 4:42 ` Alistair Popple
2022-08-17 2:34 ` Miaohe Lin
2022-08-23 10:07 ` David Hildenbrand
2022-08-23 13:26 ` Wang, Haiyue
2022-08-23 13:27 ` David Hildenbrand
2022-08-23 13:29 ` Wang, Haiyue
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