The do_memsw_account() is used to enable or disable legacy memory+swap
accounting in memory cgroup. However with disabled CONFIG_MEMCG_V1, we
don't need to keep checking it. So, let's always return false for
!CONFIG_MEMCG_V1 configs.
Before the patch:
$ size mm/memcontrol.o
text data bss dec hex filename
49928 10736 4172 64836 fd44 mm/memcontrol.o
After the patch:
$ size mm/memcontrol.o
text data bss dec hex filename
49430 10480 4172 64082 fa52 mm/memcontrol.o
Link: https://lkml.kernel.org/r/20250312222552.3284173-1-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
cb44821e1f