Messages in this thread | | | Subject | Re: [PATCH 2/4] mm: Move nr_deactivate accounting to shrink_active_list() | From | Kirill Tkhai <> | Date | Thu, 14 Feb 2019 13:30:38 +0300 |
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On 13.02.2019 22:13, Daniel Jordan wrote: > On Tue, Feb 12, 2019 at 06:14:05PM +0300, Kirill Tkhai wrote: >> We know, which LRU is not active. > > s/,// > >> >> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> >> --- >> mm/vmscan.c | 10 ++++------ >> 1 file changed, 4 insertions(+), 6 deletions(-) >> >> diff --git a/mm/vmscan.c b/mm/vmscan.c >> index 84542004a277..8d7d55e71511 100644 >> --- a/mm/vmscan.c >> +++ b/mm/vmscan.c >> @@ -2040,12 +2040,6 @@ static unsigned move_active_pages_to_lru(struct lruvec *lruvec, >> } >> } >> >> - if (!is_active_lru(lru)) { >> - __count_vm_events(PGDEACTIVATE, nr_moved); >> - count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, >> - nr_moved); >> - } >> - >> return nr_moved; >> } >> >> @@ -2137,6 +2131,10 @@ static void shrink_active_list(unsigned long nr_to_scan, >> >> nr_activate = move_active_pages_to_lru(lruvec, &l_active, &l_hold, lru); >> nr_deactivate = move_active_pages_to_lru(lruvec, &l_inactive, &l_hold, lru - LRU_ACTIVE); >> + >> + __count_vm_events(PGDEACTIVATE, nr_deactivate); >> + __count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, nr_deactivate); > > Nice, you're using the irq-unsafe one since irqs are already disabled. I guess > this was missed in c3cc39118c361. Do you want to insert a patch before this > one that converts all instances of this pattern in vmscan.c over?
I had that in plan, but I'm not sure I want to do that in this patchset. Maybe, something next later on top of this.
> There's a similar oversight in lru_lazyfree_fn with count_memcg_page_event, but > that'd mean __count_memcg_page_event which is probably overkill.
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