mm: memcg: gather memcg1-specific fields initialization in memcg1_memcg_init()
Gather all memcg1-specific struct mem_cgroup's members initialization in a new memcg1_memcg_init() function, defined in mm/memcontrol-v1.c. Obviously, if CONFIG_MEMCG_V1 is not set, there is no need to initialize these fields, so the function becomes trivial. Link: https://lkml.kernel.org/r/20240628210317.272856-5-roman.gushchin@linux.devSigned-off-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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