The patch titled
Subject: memcg: do not open code accesses to res_counter members
has been added to the -mm tree. Its filename is
memcg-do-not-open-code-accesses-to-res_counter-members.patch
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From: Glauber Costa <glommer@xxxxxxxxxxxxx>
Subject: memcg: do not open code accesses to res_counter members
We should use the accessor res_counter_read_u64 for that.
Although a purely cosmetic change is sometimes better delayed, to avoid
conflicting with other people's work, we are starting to have people
touching this code as well, and reproducing the open code behavior because
that's the standard =)
Time to fix it, then.
Signed-off-by: Glauber Costa <glommer@xxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/memcontrol.c~memcg-do-not-open-code-accesses-to-res_counter-members mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-do-not-open-code-accesses-to-res_counter-members
+++ a/mm/memcontrol.c
@@ -3719,7 +3719,7 @@ move_account:
goto try_to_free;
cond_resched();
/* "ret" should also be checked to ensure all lists are empty. */
- } while (memcg->res.usage > 0 || ret);
+ } while (res_counter_read_u64(&memcg->res, RES_USAGE) > 0 || ret);
out:
css_put(&memcg->css);
return ret;
@@ -3734,7 +3734,7 @@ try_to_free:
lru_add_drain_all();
/* try to free all pages in this cgroup */
shrink = 1;
- while (nr_retries && memcg->res.usage > 0) {
+ while (nr_retries && res_counter_read_u64(&memcg->res, RES_USAGE) > 0) {
int progress;
if (signal_pending(current)) {
_
Subject: Subject: memcg: do not open code accesses to res_counter members
Patches currently in -mm which might be from glommer@xxxxxxxxxxxxx are
linux-next.patch
memcg-do-not-open-code-accesses-to-res_counter-members.patch
memcg-fix-change-behavior-of-shared-anon-at-moving-task.patch
mm-memcg-scanning_global_lru-means-mem_cgroup_disabled.patch
mm-memcg-move-reclaim_stat-into-lruvec.patch
mm-push-lru-index-into-shrink_active_list.patch
mm-push-lru-index-into-shrink_active_list-fix.patch
mm-mark-mm-inline-functions-as-__always_inline.patch
mm-remove-lru-type-checks-from-__isolate_lru_page.patch
mm-memcg-kill-mem_cgroup_lru_del.patch
mm-memcg-use-vm_swappiness-from-target-memory-cgroup.patch
syscalls-x86-add-__nr_kcmp-syscall-v8.patch
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