[PATCH] mm/page_counter: use page_counter_read in page_counter_set_max

[Hui Su]

use page_counter_read() in page_counter_set_max().

Signed-off-by: Hui Su <sh_...@163.com>
---
 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;
-- 
2.29.0