Use page_counter_read() in page_counter_set_max().
Link: https://lkml.kernel.org/r/20201113141048.GA178922@rlk
Signed-off-by: Hui Su <sh_def@163.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@cloud.ionos.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 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;