#22: FILE: mm/memcontrol.c:1138:
+ ^I * We access a page_cgroup asynchronously without lock_page_cgroup().$

ERROR: code indent should use tabs where possible
#23: FILE: mm/memcontrol.c:1139:
+ ^I * Especially when a page_cgroup is taken from a page, pc->mem_cgroup$

ERROR: code indent should use tabs where possible
#24: FILE: mm/memcontrol.c:1140:
+ ^I * is accessed after testing USED bit. To make pc->mem_cgroup visible$

ERROR: code indent should use tabs where possible
#25: FILE: mm/memcontrol.c:1141:
+ ^I * before USED bit, we need memory barrier here.$

ERROR: code indent should use tabs where possible
#26: FILE: mm/memcontrol.c:1142:
+ ^I * See mem_cgroup_add_lru_list(), etc.$

ERROR: code indent should use tabs where possible
#27: FILE: mm/memcontrol.c:1143:
+ ^I */$

total: 6 errors, 0 warnings, 13 lines checked

./patches/memcg-add-comments-explaining-memory-barriers.patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>