memcg_set_shrinker_bit

Name:memcg_set_shrinker_bit

Proto:void memcg_set_shrinker_bit(struct mem_cgroup *memcg, int nid, int shrinker_id)

Type:void

Parameter:

Type	Parameter	Name
struct mem_cgroup *	memcg
int	nid
int	shrinker_id

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If shrinker_id >= 0 && memcg && Not mem_cgroup_is_root(memcg) Then

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_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

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map = fetch RCU-protected pointer for dereferencing(shrinker_map)

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smp_mb__before_atomic()

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Atomically set a bit in memory

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_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

**Caller**
Name	Describe
list_lru_add
deferred_split_huge_page

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