From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Oscar Salvador <osalvador@suse.de>,
Miaohe Lin <linmiaohe@huawei.com>,
Naoya Horiguchi <nao.horiguchi@gmail.com>, <linux-mm@kvack.org>
Subject: Re: [PATCH 4/4] mm: memory_hotplug: unify Huge/LRU/non-LRU movable folio isolation
Date: Wed, 31 Jul 2024 13:13:14 +0800 [thread overview]
Message-ID: <ff608104-f358-450f-a90a-8b3344aaff27@huawei.com> (raw)
In-Reply-To: <b93ed7a6-0fc1-499c-a3b5-415e62abd83f@redhat.com>
On 2024/7/30 18:31, David Hildenbrand wrote:
> On 25.07.24 03:16, Kefeng Wang wrote:
>> Move isolate_hugetlb() after grab a reference, and use the
>> isolate_folio_to_list() to unify hugetlb/LRU/non-LRU folio
>> isolation, which cleanup code a bit and save a few calls to
>> compound_head().
>
> Will this work with free hugetlb folios that have a refcount of 0 and
> get_page_unless_zero() would fail?
Before this changes, isolate_hugetlb() will fail to isolate a ref=0
folio(call folio_try_get()) and now get_page_unless_zero() will fail
too, so no behavior change, maybe I miss something?
next prev parent reply other threads:[~2024-07-31 5:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-25 1:16 [PATCH 0/4] mm: memory_hotplug: improve do_migrate_range() Kefeng Wang
2024-07-25 1:16 ` [PATCH 1/4] mm: memory-failure: add unmap_posioned_folio() Kefeng Wang
2024-07-30 10:20 ` David Hildenbrand
2024-07-31 4:46 ` Kefeng Wang
2024-07-25 1:16 ` [PATCH 2/4] mm: memory_hotplug: check hwpoisoned page firstly in do_migrate_range() Kefeng Wang
2024-07-30 10:26 ` David Hildenbrand
2024-07-31 5:09 ` Kefeng Wang
2024-08-01 20:10 ` David Hildenbrand
2024-08-02 7:50 ` Kefeng Wang
2024-08-06 9:29 ` David Hildenbrand
[not found] ` <1e6cccc5-fedc-8df6-1deb-16ceb52a4094@huawei.com>
[not found] ` <1e14d86d-0d17-41da-9400-16c9c6f93f8f@redhat.com>
2024-08-09 2:02 ` Miaohe Lin
2024-08-01 20:14 ` David Hildenbrand
2024-08-02 8:02 ` Kefeng Wang
2024-08-06 3:44 ` Kefeng Wang
2024-08-06 9:24 ` David Hildenbrand
2024-08-06 9:15 ` David Hildenbrand
2024-07-25 1:16 ` [PATCH 3/4] mm: migrate: add isolate_folio_to_list() Kefeng Wang
2024-07-26 14:21 ` kernel test robot
2024-07-27 7:56 ` Kefeng Wang
2024-07-30 10:30 ` David Hildenbrand
2024-07-25 1:16 ` [PATCH 4/4] mm: memory_hotplug: unify Huge/LRU/non-LRU movable folio isolation Kefeng Wang
2024-07-30 10:31 ` David Hildenbrand
2024-07-31 5:13 ` Kefeng Wang [this message]
2024-08-01 20:16 ` David Hildenbrand
2024-08-01 20:23 ` David Hildenbrand
2024-08-02 8:39 ` Kefeng Wang
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