This patchset introduces memcg variant memory allocation functions. The caller can explicitly pass the memcg to charge for kmem allocations. Currently the kernel, for __GFP_ACCOUNT memory allocation requests, extract the memcg of the current task to charge for the kmem allocation. This patch series introduces kmem allocation functions where the caller can pass the pointer to the remote memcg. The remote memcg will be charged for the allocation instead of the memcg of the caller. However the caller must have a reference to the remote memcg. This patch series also introduces scope API for targeted memcg charging. So, all the __GFP_ACCOUNT alloctions within the specified scope will be charged to the given target memcg. Shakeel Butt (3): mm: memcg: remote memcg charging for kmem allocations fs: fsnotify: account fsnotify metadata to kmemcg fs, mm: account buffer_head to kmemcg fs/buffer.c | 14 ++++- fs/notify/dnotify/dnotify.c | 5 +- fs/notify/fanotify/fanotify.c | 6 +- fs/notify/fanotify/fanotify_user.c | 5 +- fs/notify/group.c | 6 ++ fs/notify/inotify/inotify_fsnotify.c | 2 +- fs/notify/inotify/inotify_user.c | 5 +- include/linux/fsnotify_backend.h | 12 ++-- include/linux/memcontrol.h | 14 +++++ include/linux/sched.h | 3 + include/linux/sched/mm.h | 24 ++++++++ include/linux/slab.h | 83 ++++++++++++++++++++++++++++ kernel/fork.c | 3 + mm/memcontrol.c | 54 ++++++++++++++++-- 14 files changed, 220 insertions(+), 16 deletions(-) -- 2.18.0.rc1.244.gcf134e6275-goog
