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Subject[PATCH] mm/page_counter: use page_counter_read in page_counter_set_max
use page_counter_read() in page_counter_set_max().

Signed-off-by: Hui Su <sh_def@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

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