From: Miaohe Lin <linmiaohe@huawei.com>
To: Alistair Popple <apopple@nvidia.com>
Cc: <akpm@linux-foundation.org>, <mike.kravetz@oracle.com>,
<shy828301@gmail.com>, <willy@infradead.org>,
<ying.huang@intel.com>, <ziy@nvidia.com>, <minchan@kernel.org>,
<ave.hansen@linux.intel.com>, <o451686892@gmail.com>,
<almasrymina@google.com>, <jhubbard@nvidia.com>,
<rcampbell@nvidia.com>, <peterx@redhat.com>,
<naoya.horiguchi@nec.com>, <mhocko@suse.com>, <riel@redhat.com>,
<linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 03/16] mm/migration: remove unneeded local variable page_lru
Date: Tue, 8 Mar 2022 19:29:49 +0800 [thread overview]
Message-ID: <6a1b2a5e-5b43-b45a-9092-1699cc3fc0c8@huawei.com> (raw)
In-Reply-To: <87wnh6rpms.fsf@nvdebian.thelocal>
On 2022/3/7 18:58, Alistair Popple wrote:
> Miaohe Lin <linmiaohe@huawei.com> writes:
>
>> We can use page_is_file_lru() directly to help account the isolated
>> pages to simplify the code a bit as same as local variable follflags.
>
> Looks good, but there are two independent changes here. Even though they are
> small they should probably be split into two patches.
Sounds reasonable. Will try to do this in v2. Thanks.
>
>> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
>> ---
>> mm/migrate.c | 8 ++------
>> 1 file changed, 2 insertions(+), 6 deletions(-)
>>
>> diff --git a/mm/migrate.c b/mm/migrate.c
>> index bc1867a5706c..da5a81052468 100644
>> --- a/mm/migrate.c
>> +++ b/mm/migrate.c
>> @@ -1609,7 +1609,6 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr,
>> {
>> struct vm_area_struct *vma;
>> struct page *page;
>> - unsigned int follflags;
>> int err;
>>
>> mmap_read_lock(mm);
>> @@ -1619,8 +1618,7 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr,
>> goto out;
>>
>> /* FOLL_DUMP to ignore special (like zero) pages */
>> - follflags = FOLL_GET | FOLL_DUMP;
>> - page = follow_page(vma, addr, follflags);
>> + page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP);
>>
>> err = PTR_ERR(page);
>> if (IS_ERR(page))
>> @@ -2033,7 +2031,6 @@ static struct page *alloc_misplaced_dst_page_thp(struct page *page,
>>
>> static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
>> {
>> - int page_lru;
>> int nr_pages = thp_nr_pages(page);
>> int order = compound_order(page);
>>
>> @@ -2060,8 +2057,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
>> if (isolate_lru_page(page))
>> return 0;
>>
>> - page_lru = page_is_file_lru(page);
>> - mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru,
>> + mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_is_file_lru(page),
>> nr_pages);
>>
>> /*
next prev parent reply other threads:[~2022-03-08 11:29 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 9:33 [PATCH 00/16] A few cleanup and fixup patches for migration Miaohe Lin
2022-03-04 9:33 ` [PATCH 01/16] mm/migration: remove unneeded local variable mapping_locked Miaohe Lin
2022-03-04 13:48 ` Muchun Song
2022-03-07 2:00 ` Huang, Ying
2022-03-08 11:41 ` Miaohe Lin
2022-03-04 9:33 ` [PATCH 02/16] mm/migration: remove unneeded out label Miaohe Lin
2022-03-04 12:12 ` Muchun Song
2022-03-07 2:03 ` Huang, Ying
2022-03-08 11:44 ` Miaohe Lin
2022-03-04 9:33 ` [PATCH 03/16] mm/migration: remove unneeded local variable page_lru Miaohe Lin
2022-03-07 10:58 ` Alistair Popple
2022-03-08 11:29 ` Miaohe Lin [this message]
2022-03-04 9:33 ` [PATCH 04/16] mm/migration: reduce the rcu lock duration Miaohe Lin
2022-03-04 12:16 ` Muchun Song
2022-03-07 2:32 ` Huang, Ying
2022-03-08 12:09 ` Miaohe Lin
2022-03-09 1:02 ` Huang, Ying
2022-03-09 8:28 ` Miaohe Lin
2022-03-04 9:33 ` [PATCH 05/16] mm/migration: fix the confusing PageTransHuge check Miaohe Lin
2022-03-04 12:20 ` Muchun Song
2022-03-04 9:33 ` [PATCH 06/16] mm/migration: use helper function vma_lookup() in add_page_for_migration Miaohe Lin
2022-03-04 9:34 ` [PATCH 07/16] mm/migration: use helper macro min_t in do_pages_stat Miaohe Lin
2022-03-04 13:51 ` Muchun Song
2022-03-07 1:14 ` Andrew Morton
2022-03-07 11:51 ` Miaohe Lin
2022-03-04 9:34 ` [PATCH 08/16] mm/migration: avoid unneeded nodemask_t initialization Miaohe Lin
2022-03-04 13:57 ` Muchun Song
2022-03-07 2:31 ` Baolin Wang
2022-03-04 9:34 ` [PATCH 09/16] mm/migration: remove some duplicated codes in migrate_pages Miaohe Lin
2022-03-04 15:16 ` Zi Yan
2022-03-07 1:44 ` Baolin Wang
2022-03-04 9:34 ` [PATCH 10/16] mm/migration: remove PG_writeback handle in folio_migrate_flags Miaohe Lin
2022-03-07 1:21 ` Andrew Morton
2022-03-07 12:44 ` Miaohe Lin
2022-03-04 9:34 ` [PATCH 11/16] mm/migration: remove unneeded lock page and PageMovable check Miaohe Lin
2022-03-04 9:34 ` [PATCH 12/16] mm/migration: fix potential page refcounts leak in migrate_pages Miaohe Lin
2022-03-04 15:21 ` Zi Yan
2022-03-07 1:57 ` Baolin Wang
2022-03-07 5:02 ` Huang, Ying
2022-03-07 6:00 ` Baolin Wang
2022-03-07 12:03 ` Miaohe Lin
2022-03-07 12:01 ` Miaohe Lin
2022-03-07 5:01 ` Huang, Ying
2022-03-07 12:11 ` Miaohe Lin
2022-03-04 9:34 ` [PATCH 13/16] mm/migration: return errno when isolate_huge_page failed Miaohe Lin
2022-03-05 2:23 ` Muchun Song
2022-03-07 11:46 ` Miaohe Lin
2022-03-07 2:14 ` Baolin Wang
2022-03-07 12:20 ` Miaohe Lin
2022-03-08 1:32 ` Baolin Wang
2022-03-08 6:34 ` Miaohe Lin
2022-03-07 5:07 ` Huang, Ying
2022-03-08 12:12 ` Miaohe Lin
2022-03-09 1:00 ` Huang, Ying
2022-03-09 8:29 ` Miaohe Lin
2022-03-04 9:34 ` [PATCH 14/16] mm/migration: fix potential invalid node access for reclaim-based migration Miaohe Lin
2022-03-07 2:25 ` Baolin Wang
2022-03-07 5:14 ` Huang, Ying
2022-03-07 7:04 ` Baolin Wang
2022-03-08 11:46 ` Miaohe Lin
2022-03-07 5:14 ` Huang, Ying
2022-03-04 9:34 ` [PATCH 15/16] mm/migration: fix possible do_pages_stat_array racing with memory offline Miaohe Lin
2022-03-07 5:21 ` Huang, Ying
2022-03-07 7:01 ` Muchun Song
2022-03-07 7:42 ` Huang, Ying
2022-03-08 11:33 ` Miaohe Lin
2022-03-04 9:34 ` [PATCH 16/16] mm/migration: fix potential pte_unmap on an not mapped pte Miaohe Lin
2022-03-07 5:37 ` Huang, Ying
2022-03-08 12:19 ` Miaohe Lin
2022-03-09 0:56 ` Huang, Ying
2022-03-09 8:48 ` Miaohe Lin
2022-03-07 7:35 ` Alistair Popple
2022-03-08 11:55 ` Miaohe Lin
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