+ mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch added to -mm tree

+ mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/page_counter: use page_counter_read in page_counter_set_max
has been added to the -mm tree.  Its filename is
     mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch

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------------------------------------------------------
From: Hui Su <sh_def@163.com>
Subject: 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 <sh_def@163.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@cloud.ionos.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_counter.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/page_counter.c~mm-page_counter-use-page_counter_read-in-page_counter_set_max
+++ a/mm/page_counter.c
@@ -183,14 +183,14 @@ int page_counter_set_max(struct page_cou
 		 * 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;
_

Patches currently in -mm which might be from sh_def@163.com are

mmslab_common-use-list_for_each_entry-in-dump_unreclaimable_slab.patch
mm-page_counter-use-page_counter_read-in-page_counter_set_max.patch
mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch
mm-oom_kill-change-comment-and-rename-is_dump_unreclaim_slabs.patch
acctc-use-elif-instead-of-end-and-elif.patch
mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch