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@xxxxxxx>
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@xxxxxxx>
Reviewed-by: Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxx 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
