From 13064781304eb544066b9da403c95d05c0ea3624 Mon Sep 17 00:00:00 2001 From: Hui Su Date: Mon, 14 Dec 2020 19:06:58 -0800 Subject: [PATCH] mm/page_counter: use page_counter_read in page_counter_set_max Use page_counter_read() in page_counter_set_max(). Link: https://lkml.kernel.org/r/20201113141048.GA178922@rlk Signed-off-by: Hui Su Reviewed-by: Pankaj Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_counter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_counter.c b/mm/page_counter.c index b24a60b28bb0..c6860f51b6c6 100644 --- a/mm/page_counter.c +++ b/mm/page_counter.c @@ -183,14 +183,14 @@ int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages) * the limit, so if it sees the old limit, we see the * modified counter and retry. */ - usage = atomic_long_read(&counter->usage); + usage = page_counter_read(counter); if (usage > nr_pages) return -EBUSY; old = xchg(&counter->max, nr_pages); - if (atomic_long_read(&counter->usage) <= usage) + if (page_counter_read(counter) <= usage) return 0; counter->max = old;