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Patch series "mm/list_lru: Split list_lru lock into per-cgroup scope". When LOCKDEP is not enabled, lock_class_key is an empty struct that is never used. But the list_lru initialization function still takes a placeholder pointer as parameter, and the compiler cannot optimize it because the function is not static and exported. Remove this parameter and move it inside the list_lru struct. Only use it when LOCKDEP is enabled. Kernel builds with LOCKDEP will be slightly larger, while !LOCKDEP builds without it will be slightly smaller (the common case). Link: https://lkml.kernel.org/r/20241104175257.60853-1-ryncsn@gmail.com Link: https://lkml.kernel.org/r/20241104175257.60853-2-ryncsn@gmail.com Signed-off-by: Kairui Song <kasong@tencent.com> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <zhouchengming@bytedance.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Waiman Long <longman@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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