diff options
author | Yu Zhao <yuzhao@google.com> | 2021-02-24 12:08:09 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-24 13:38:33 -0800 |
commit | 42895ea73bcd37c4a79e4c9f681ab8b82243c7f7 (patch) | |
tree | e058e39d3e657c26feb827df0e1edbea6b42a8ba /mm/vmscan.c | |
parent | 725cac1c7e345c2e35a2de2db57233af279b851f (diff) |
mm/vmscan.c: use add_page_to_lru_list()
Patch series "mm: lru related cleanups", v2.
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.
This patch (of 10):
There is add_page_to_lru_list(), and move_pages_to_lru() should reuse it,
not duplicate it.
Link: https://lkml.kernel.org/r/20210122220600.906146-1-yuzhao@google.com
Link: https://lore.kernel.org/linux-mm/20201207220949.830352-2-yuzhao@google.com/
Link: https://lkml.kernel.org/r/20210122220600.906146-2-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r-- | mm/vmscan.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 04509994aed4..19875660e8f8 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1823,7 +1823,6 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, int nr_pages, nr_moved = 0; LIST_HEAD(pages_to_free); struct page *page; - enum lru_list lru; while (!list_empty(list)) { page = lru_to_page(list); @@ -1868,11 +1867,8 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, * inhibits memcg migration). */ VM_BUG_ON_PAGE(!lruvec_holds_page_lru_lock(page, lruvec), page); - lru = page_lru(page); + add_page_to_lru_list(page, lruvec, page_lru(page)); nr_pages = thp_nr_pages(page); - - update_lru_size(lruvec, lru, page_zonenum(page), nr_pages); - list_add(&page->lru, &lruvec->lists[lru]); nr_moved += nr_pages; if (PageActive(page)) workingset_age_nonresident(lruvec, nr_pages); |