From: Andrew Morton <akpm@linux-foundation.org>
To: Yu Zhao <yuzhao@google.com>
Cc: Matthew Wilcox <willy@infradead.org>,
Hugh Dickins <hughd@google.com>,
Alex Shi <alex.shi@linux.alibaba.com>,
Michal Hocko <mhocko@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Roman Gushchin <guro@fb.com>, Vlastimil Babka <vbabka@suse.cz>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 03/10] mm: don't pass "enum lru_list" to lru list addition functions
Date: Tue, 23 Feb 2021 14:50:11 -0800 [thread overview]
Message-ID: <20210223145011.0181eed96ab0091a493b51f6@linux-foundation.org> (raw)
In-Reply-To: <YBCUTinnVrlVVm6n@google.com>
On Tue, 26 Jan 2021 15:14:38 -0700 Yu Zhao <yuzhao@google.com> wrote:
> On Tue, Jan 26, 2021 at 10:01:11PM +0000, Matthew Wilcox wrote:
> > On Fri, Jan 22, 2021 at 03:05:53PM -0700, Yu Zhao wrote:
> > > +++ b/mm/swap.c
> > > @@ -231,7 +231,7 @@ static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec)
> > > if (!PageUnevictable(page)) {
> > > del_page_from_lru_list(page, lruvec, page_lru(page));
> > > ClearPageActive(page);
> > > - add_page_to_lru_list_tail(page, lruvec, page_lru(page));
> > > + add_page_to_lru_list_tail(page, lruvec);
> > > __count_vm_events(PGROTATED, thp_nr_pages(page));
> > > }
> >
> > Is it profitable to do ...
> >
> > - del_page_from_lru_list(page, lruvec, page_lru(page));
> > + enum lru_list lru = page_lru(page);
> > + del_page_from_lru_list(page, lruvec, lru);
> > ClearPageActive(page);
> > - add_page_to_lru_list_tail(page, lruvec, page_lru(page));
> > + lru &= ~LRU_ACTIVE;
> > + add_page_to_lru_list_tail(page, lruvec, lru);
>
> Ok, now we want to trade readability for size. Sure, I'll see how
> much we could squeeze.
As nothing has happened here and the code bloat issue remains, I'll
hold this series out of 5.12-rc1.
next prev parent reply other threads:[~2021-02-23 22:50 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 22:05 [PATCH v2 00/10] mm: lru related cleanups Yu Zhao
2021-01-22 22:05 ` [PATCH v2 01/10] mm: use add_page_to_lru_list() Yu Zhao
2021-01-26 18:57 ` Vlastimil Babka
2021-01-27 2:12 ` Miaohe Lin
2021-01-22 22:05 ` [PATCH v2 02/10] mm: shuffle lru list addition and deletion functions Yu Zhao
2021-01-26 18:58 ` Vlastimil Babka
2021-01-27 2:14 ` Miaohe Lin
2021-01-22 22:05 ` [PATCH v2 03/10] mm: don't pass "enum lru_list" to lru list addition functions Yu Zhao
2021-01-26 19:13 ` Vlastimil Babka
2021-01-26 21:34 ` Yu Zhao
2021-01-27 10:51 ` Vlastimil Babka
2021-01-26 22:01 ` Matthew Wilcox
2021-01-26 22:14 ` Yu Zhao
2021-02-23 22:50 ` Andrew Morton [this message]
2021-02-24 5:29 ` Yu Zhao
2021-02-24 8:06 ` Alex Shi
2021-02-24 8:37 ` Yu Zhao
2021-02-24 9:01 ` Alex Shi
2021-01-22 22:05 ` [PATCH v2 04/10] mm: don't pass "enum lru_list" to trace_mm_lru_insertion() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 05/10] mm: don't pass "enum lru_list" to del_page_from_lru_list() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 06/10] mm: add __clear_page_lru_flags() to replace page_off_lru() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 07/10] mm: VM_BUG_ON lru page flags Yu Zhao
2021-01-22 22:05 ` [PATCH v2 08/10] mm: fold page_lru_base_type() into its sole caller Yu Zhao
2021-01-22 22:05 ` [PATCH v2 09/10] mm: fold __update_lru_size() " Yu Zhao
2021-01-22 22:06 ` [PATCH v2 10/10] mm: make lruvec_lru_size() static Yu Zhao
2021-02-24 8:48 ` [PATCH] mm: test page->flags directly in page_lru() Yu Zhao
2021-02-24 13:15 ` Andrew Morton
2021-02-24 19:57 ` Yu Zhao
2021-02-24 21:56 ` Matthew Wilcox
2021-02-24 22:34 ` Yu Zhao
2021-02-24 22:48 ` Matthew Wilcox
2021-02-24 23:50 ` Yu Zhao
2021-02-25 3:55 ` Matthew Wilcox
2021-02-25 5:22 ` Yu Zhao
2021-02-25 12:12 ` Matthew Wilcox
2021-02-26 9:17 ` [PATCH v2 0/3] trim the uses of compound_head() Yu Zhao
2021-02-26 9:17 ` [PATCH v2 1/3] mm: bypass compound_head() for PF_NO_TAIL when enforce=1 Yu Zhao
2021-02-26 9:17 ` [PATCH v2 2/3] mm: use PF_NO_TAIL for PG_lru Yu Zhao
2021-02-26 20:22 ` Yu Zhao
2021-02-26 9:17 ` [PATCH v2 3/3] mm: use PF_ONLY_HEAD for PG_active and PG_unevictable Yu Zhao
2021-02-26 12:13 ` Matthew Wilcox
2021-02-26 19:49 ` Yu Zhao
2021-02-26 20:27 ` Matthew Wilcox
2021-03-01 11:50 ` Kirill A. Shutemov
2021-03-01 19:58 ` Yu Zhao
2021-03-01 20:16 ` Hugh Dickins
2021-03-01 20:26 ` Matthew Wilcox
2021-02-26 10:52 ` [PATCH v2 0/3] trim the uses of compound_head() Vlastimil Babka
2021-02-26 19:04 ` Yu Zhao
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