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From: Alex Shi <alex.shi@linux.alibaba.com>
To: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@techsingularity.net>,
	Tejun Heo <tj@kernel.org>, Hugh Dickins <hughd@google.com>,
	Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
	Daniel Jordan <daniel.m.jordan@oracle.com>,
	Yang Shi <yang.shi@linux.alibaba.com>,
	Matthew Wilcox <willy@infradead.org>,
	Johannes Weiner <hannes@cmpxchg.org>,
	kbuild test robot <lkp@intel.com>, linux-mm <linux-mm@kvack.org>,
	LKML <linux-kernel@vger.kernel.org>,
	cgroups@vger.kernel.org, Shakeel Butt <shakeelb@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Wei Yang <richard.weiyang@gmail.com>,
	"Kirill A. Shutemov" <kirill@shutemov.name>
Subject: Re: [PATCH v16 21/22] mm/pgdat: remove pgdat lru_lock
Date: Sat, 18 Jul 2020 22:17:48 +0800	[thread overview]
Message-ID: <5f162d78-2318-3d12-bbbb-1a47ed978bf7@linux.alibaba.com> (raw)
In-Reply-To: <CAKgT0UeK3c4NjoJ7MQMxU20Bu0AZKZh73Cj4P_g5OSL6KaONhQ@mail.gmail.com>



在 2020/7/18 上午5:09, Alexander Duyck 写道:
>> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>> index e028b87ce294..4d7df42b32d6 100644
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -6721,7 +6721,6 @@ static void __meminit pgdat_init_internals(struct pglist_data *pgdat)
>>         init_waitqueue_head(&pgdat->pfmemalloc_wait);
>>
>>         pgdat_page_ext_init(pgdat);
>> -       spin_lock_init(&pgdat->lru_lock);
>>         lruvec_init(&pgdat->__lruvec);
>>  }
>>
> This patch would probably make more sense as part of patch 18 since
> you removed all of the users of this field there.


yes, I just want to a bit of sense of ceremony to remove this huge big lock. :)

  reply	other threads:[~2020-07-18 14:18 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-11  0:58 [PATCH v16 00/22] per memcg lru_lock Alex Shi
2020-07-11  0:58 ` [PATCH v16 01/22] mm/vmscan: remove unnecessary lruvec adding Alex Shi
2020-07-11  0:58 ` [PATCH v16 02/22] mm/page_idle: no unlikely double check for idle page counting Alex Shi
2020-07-11  0:58 ` [PATCH v16 03/22] mm/compaction: correct the comments of compact_defer_shift Alex Shi
2020-07-11  0:58 ` [PATCH v16 04/22] mm/compaction: rename compact_deferred as compact_should_defer Alex Shi
2020-07-11  0:58 ` [PATCH v16 05/22] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi
2020-07-16  8:59   ` Alex Shi
2020-07-16 13:17     ` Kirill A. Shutemov
2020-07-17  5:13       ` Alex Shi
2020-07-20  8:37         ` Kirill A. Shutemov
2020-07-11  0:58 ` [PATCH v16 06/22] mm/thp: clean up lru_add_page_tail Alex Shi
2020-07-20  8:43   ` Kirill A. Shutemov
2020-07-11  0:58 ` [PATCH v16 07/22] mm/thp: remove code path which never got into Alex Shi
2020-07-20  8:43   ` Kirill A. Shutemov
2020-07-11  0:58 ` [PATCH v16 08/22] mm/thp: narrow lru locking Alex Shi
2020-07-11  0:58 ` [PATCH v16 09/22] mm/memcg: add debug checking in lock_page_memcg Alex Shi
2020-07-11  0:58 ` [PATCH v16 10/22] mm/swap: fold vm event PGROTATED into pagevec_move_tail_fn Alex Shi
2020-07-11  0:58 ` [PATCH v16 11/22] mm/lru: move lru_lock holding in func lru_note_cost_page Alex Shi
2020-07-11  0:58 ` [PATCH v16 12/22] mm/lru: move lock into lru_note_cost Alex Shi
2020-07-11  0:58 ` [PATCH v16 13/22] mm/lru: introduce TestClearPageLRU Alex Shi
2020-07-16  9:06   ` Alex Shi
2020-07-16 21:12   ` Alexander Duyck
2020-07-17  7:45     ` Alex Shi
2020-07-17 18:26       ` Alexander Duyck
2020-07-19  4:45         ` Alex Shi
2020-07-19 11:24           ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 14/22] mm/thp: add tail pages into lru anyway in split_huge_page() Alex Shi
2020-07-17  9:30   ` Alex Shi
2020-07-20  8:49     ` Kirill A. Shutemov
2020-07-20  9:04       ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 15/22] mm/compaction: do page isolation first in compaction Alex Shi
2020-07-16 21:32   ` Alexander Duyck
2020-07-17  5:09     ` Alex Shi
2020-07-17 16:09       ` Alexander Duyck
2020-07-19  3:59         ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 16/22] mm/mlock: reorder isolation sequence during munlock Alex Shi
2020-07-17 20:30   ` Alexander Duyck
2020-07-19  3:55     ` Alex Shi
2020-07-20 18:51       ` Alexander Duyck
2020-07-21  9:26         ` Alex Shi
2020-07-21 13:51           ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 17/22] mm/swap: serialize memcg changes during pagevec_lru_move_fn Alex Shi
2020-07-11  0:58 ` [PATCH v16 18/22] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi
2020-07-17 21:38   ` Alexander Duyck
2020-07-18 14:15     ` Alex Shi
2020-07-19  9:12       ` Alex Shi
2020-07-19 15:14         ` Alexander Duyck
2020-07-20  5:47           ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 19/22] mm/lru: introduce the relock_page_lruvec function Alex Shi
2020-07-17 22:03   ` Alexander Duyck
2020-07-18 14:01     ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 20/22] mm/vmscan: use relock for move_pages_to_lru Alex Shi
2020-07-17 21:44   ` Alexander Duyck
2020-07-18 14:15     ` Alex Shi
2020-07-11  0:58 ` [PATCH v16 21/22] mm/pgdat: remove pgdat lru_lock Alex Shi
2020-07-17 21:09   ` Alexander Duyck
2020-07-18 14:17     ` Alex Shi [this message]
2020-07-11  0:58 ` [PATCH v16 22/22] mm/lru: revise the comments of lru_lock Alex Shi
2020-07-11  1:02 ` [PATCH v16 00/22] per memcg lru_lock Alex Shi
2020-07-16  8:49 ` Alex Shi
2020-07-16 14:11 ` Alexander Duyck
2020-07-17  5:24   ` Alex Shi
2020-07-19 15:23     ` Hugh Dickins
2020-07-20  3:01       ` Alex Shi
2020-07-20  4:47         ` Hugh Dickins
2020-07-20  7:30 ` Alex Shi

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