From: Yu Zhao <yuzhao@google.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Alex Shi <alex.shi@linux.alibaba.com>
Cc: 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>,
Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Yu Zhao <yuzhao@google.com>
Subject: [PATCH 00/11] mm: lru related cleanups
Date: Mon, 7 Dec 2020 15:09:38 -0700 [thread overview]
Message-ID: <20201207220949.830352-1-yuzhao@google.com> (raw)
The cleanups are intended to reduce the verbosity in lru list
operations and make them less error-prone. A typical example
would be how the patches change __activate_page():
static void __activate_page(struct page *page, struct lruvec *lruvec)
{
if (!PageActive(page) && !PageUnevictable(page)) {
- int lru = page_lru_base_type(page);
int nr_pages = thp_nr_pages(page);
- del_page_from_lru_list(page, lruvec, lru);
+ del_page_from_lru_list(page, lruvec);
SetPageActive(page);
- lru += LRU_ACTIVE;
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
trace_mm_lru_activate(page);
There are a few more places like __activate_page() and they are
unnecessarily repetitive in terms of figuring out which list a page
should be added onto or deleted from. And with the duplicated code
removed, they are easier to read, IMO.
Patch 1 to 5 basically cover the above. Patch 6 and 7 make code more
robust by improving bug reporting. Patch 8, 9 and 10 take care of
some dangling helpers left in header files. Patch 11 isn't strictly a
clean-up patch, but it seems still relevant to include it here.
Yu Zhao (11):
mm: use add_page_to_lru_list()
mm: shuffle lru list addition and deletion functions
mm: don't pass "enum lru_list" to lru list addition functions
mm: don't pass "enum lru_list" to trace_mm_lru_insertion()
mm: don't pass "enum lru_list" to del_page_from_lru_list()
mm: add __clear_page_lru_flags() to replace page_off_lru()
mm: VM_BUG_ON lru page flags
mm: fold page_lru_base_type() into its sole caller
mm: fold __update_lru_size() into its sole caller
mm: make lruvec_lru_size() static
mm: enlarge the "int nr_pages" parameter of update_lru_size()
include/linux/memcontrol.h | 10 +--
include/linux/mm_inline.h | 115 ++++++++++++++-------------------
include/linux/mmzone.h | 2 -
include/linux/vmstat.h | 6 +-
include/trace/events/pagemap.h | 11 ++--
mm/compaction.c | 2 +-
mm/memcontrol.c | 10 +--
mm/mlock.c | 3 +-
mm/swap.c | 50 ++++++--------
mm/vmscan.c | 21 ++----
10 files changed, 91 insertions(+), 139 deletions(-)
--
2.29.2.576.ga3fc446d84-goog
next reply other threads:[~2020-12-07 22:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-07 22:09 Yu Zhao [this message]
2020-12-07 22:09 ` [PATCH 01/11] mm: use add_page_to_lru_list() Yu Zhao
2020-12-08 3:41 ` Alex Shi
2020-12-07 22:09 ` [PATCH 02/11] mm: shuffle lru list addition and deletion functions Yu Zhao
2020-12-07 22:09 ` [PATCH 03/11] mm: don't pass "enum lru_list" to lru list addition functions Yu Zhao
2020-12-08 8:14 ` Alex Shi
2020-12-08 8:24 ` Alex Shi
2020-12-07 22:09 ` [PATCH 04/11] mm: don't pass "enum lru_list" to trace_mm_lru_insertion() Yu Zhao
2020-12-08 8:46 ` Alex Shi
2020-12-07 22:09 ` [PATCH 05/11] mm: don't pass "enum lru_list" to del_page_from_lru_list() Yu Zhao
2020-12-07 22:09 ` [PATCH 06/11] mm: add __clear_page_lru_flags() to replace page_off_lru() Yu Zhao
2020-12-07 22:09 ` [PATCH 07/11] mm: VM_BUG_ON lru page flags Yu Zhao
2020-12-07 22:24 ` Matthew Wilcox
2020-12-16 0:54 ` Yu Zhao
2020-12-16 0:59 ` Matthew Wilcox
2020-12-07 22:09 ` [PATCH 08/11] mm: fold page_lru_base_type() into its sole caller Yu Zhao
2020-12-08 9:02 ` Alex Shi
2020-12-07 22:09 ` [PATCH 09/11] mm: fold __update_lru_size() " Yu Zhao
2020-12-08 9:07 ` Alex Shi
2020-12-07 22:09 ` [PATCH 10/11] mm: make lruvec_lru_size() static Yu Zhao
2020-12-08 9:09 ` Alex Shi
2020-12-07 22:09 ` [PATCH 11/11] mm: enlarge the "int nr_pages" parameter of update_lru_size() Yu Zhao
2020-12-08 9:15 ` Alex Shi
2020-12-14 21:50 ` Hugh Dickins
2020-12-16 0:18 ` Yu Zhao
2020-12-10 9:28 ` [PATCH 00/11] mm: lru related cleanups Alex Shi
2020-12-16 0:48 ` Yu Zhao
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