From: Michal Hocko <mhocko@suse.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org, cgroups@vger.kernel.org,
Johannes Weiner <hannes@cmpxchg.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>
Subject: Re: [PATCH v3 13/18] mm/memcg: Add folio_memcg_lock() and folio_memcg_unlock()
Date: Thu, 8 Jul 2021 09:28:21 +0200 [thread overview]
Message-ID: <YOapFVzNhSgnN/tM@dhcp22.suse.cz> (raw)
In-Reply-To: <YOXD+TVkAeWmjLxX@casper.infradead.org>
On Wed 07-07-21 16:10:49, Matthew Wilcox wrote:
[...]
> > I do not really want to be annoying here but I have to say that I like
> > the conversion by previous patches much better than this wrapper
> > approach as mentioned during the previous review already. If you have
> > some reasons to stick with this approach for this particular case then
> > make it explicit in the changelog.
>
> OK, I can point to the number of callers as a reason to keep the
> wrappers in place. I intended to just do the conversion here, but
> seeing the number of callers made me reconsider.
OK, fair enough. My worry is that we will have this lingering for way
too long. People simply tend to copy code... Anyway, please add a
comment warning that the wrapper shouldn't be used in any new code at
least.
Thanks!
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2021-07-08 7:28 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 4:00 [PATCH v3 00/18] Folio conversion of memcg Matthew Wilcox (Oracle)
2021-06-30 4:00 ` [PATCH v3 01/18] mm: Add folio_nid() Matthew Wilcox (Oracle)
2021-07-01 6:56 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 02/18] mm/memcg: Remove 'page' parameter to mem_cgroup_charge_statistics() Matthew Wilcox (Oracle)
2021-06-30 14:17 ` Johannes Weiner
2021-06-30 4:00 ` [PATCH v3 03/18] mm/memcg: Use the node id in mem_cgroup_update_tree() Matthew Wilcox (Oracle)
2021-06-30 6:55 ` Michal Hocko
2021-06-30 14:18 ` Johannes Weiner
2021-07-01 6:57 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 04/18] mm/memcg: Remove soft_limit_tree_node() Matthew Wilcox (Oracle)
2021-06-30 6:56 ` Michal Hocko
2021-06-30 14:19 ` Johannes Weiner
2021-07-01 7:09 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 05/18] mm/memcg: Convert memcg_check_events to take a node ID Matthew Wilcox (Oracle)
2021-06-30 6:58 ` Michal Hocko
2021-06-30 6:59 ` Michal Hocko
2021-07-01 7:09 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 06/18] mm/memcg: Add folio_memcg() and related functions Matthew Wilcox (Oracle)
2021-06-30 6:53 ` kernel test robot
2021-07-01 7:12 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 07/18] mm/memcg: Convert commit_charge() to take a folio Matthew Wilcox (Oracle)
2021-06-30 4:00 ` [PATCH v3 08/18] mm/memcg: Convert mem_cgroup_charge() " Matthew Wilcox (Oracle)
2021-06-30 7:17 ` kernel test robot
2021-07-01 7:13 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 09/18] mm/memcg: Convert uncharge_page() to uncharge_folio() Matthew Wilcox (Oracle)
2021-07-01 7:15 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 10/18] mm/memcg: Convert mem_cgroup_uncharge() to take a folio Matthew Wilcox (Oracle)
2021-06-30 8:46 ` kernel test robot
2021-07-01 7:17 ` Christoph Hellwig
2021-07-07 12:09 ` Matthew Wilcox
2021-06-30 4:00 ` [PATCH v3 11/18] mm/memcg: Convert mem_cgroup_migrate() to take folios Matthew Wilcox (Oracle)
2021-07-01 7:20 ` Christoph Hellwig
2021-06-30 4:00 ` [PATCH v3 12/18] mm/memcg: Convert mem_cgroup_track_foreign_dirty_slowpath() to folio Matthew Wilcox (Oracle)
2021-06-30 4:00 ` [PATCH v3 13/18] mm/memcg: Add folio_memcg_lock() and folio_memcg_unlock() Matthew Wilcox (Oracle)
2021-06-30 8:32 ` Michal Hocko
2021-07-07 15:10 ` Matthew Wilcox
2021-07-08 7:28 ` Michal Hocko [this message]
2021-07-07 17:08 ` Johannes Weiner
2021-07-07 19:28 ` Matthew Wilcox
2021-07-07 20:41 ` Johannes Weiner
2021-07-09 19:37 ` Matthew Wilcox
2021-06-30 4:00 ` [PATCH v3 14/18] mm/memcg: Convert mem_cgroup_move_account() to use a folio Matthew Wilcox (Oracle)
2021-06-30 8:30 ` Michal Hocko
2021-06-30 11:22 ` Matthew Wilcox
2021-06-30 12:20 ` Michal Hocko
2021-06-30 12:31 ` Matthew Wilcox
2021-06-30 12:45 ` Michal Hocko
2021-07-07 15:25 ` Matthew Wilcox
2021-07-08 7:30 ` Michal Hocko
2021-06-30 4:00 ` [PATCH v3 15/18] mm/memcg: Add mem_cgroup_folio_lruvec() Matthew Wilcox (Oracle)
2021-06-30 8:12 ` kernel test robot
2021-06-30 19:18 ` Matthew Wilcox
2021-06-30 21:21 ` Johannes Weiner
2021-06-30 4:00 ` [PATCH v3 16/18] mm/memcg: Add folio_lruvec_lock() and similar functions Matthew Wilcox (Oracle)
2021-06-30 8:36 ` Michal Hocko
2021-06-30 4:00 ` [PATCH v3 17/18] mm/memcg: Add folio_lruvec_relock_irq() and folio_lruvec_relock_irqsave() Matthew Wilcox (Oracle)
2021-06-30 8:39 ` Michal Hocko
2021-06-30 4:00 ` [PATCH v3 18/18] mm/workingset: Convert workingset_activation to take a folio Matthew Wilcox (Oracle)
2021-06-30 8:44 ` [PATCH v3 00/18] Folio conversion of memcg Michal Hocko
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