mem_cgroup_uncharge_swap

Name:mem_cgroup_uncharge_swap - uncharge swap space*@entry: swap entry to uncharge*@nr_pages: the amount of swap space to uncharge

Proto:void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages)

Type:void

Parameter:

Type	Parameter	Name
swp_entry_t	entry
unsigned int	nr_pages

6979

If Not Whether the swap controller is active Then Return

6982

id = swap_cgroup_record(entry, 0, nr_pages)

6983

_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

6984

memcg = mem_cgroup_from_id - look up a memcg from a memcg id*@id: the memcg id to look up* Caller must hold rcu_read_lock().

6985

If memcg Then

6986

If Not mem_cgroup_is_root(memcg) Then

6987

If cgroup_subsys_on_dfl - fast test on whether a subsys is on default hierarchy*@ss: subsystem in question(memory_cgrp_subsys) Then page_counter_uncharge - hierarchically uncharge pages*@counter: counter*@nr_pages: number of pages to uncharge

6989

Else page_counter_uncharge - hierarchically uncharge pages*@counter: counter*@nr_pages: number of pages to uncharge

6992

dx can be of type enum memcg_stat_item or node_stat_item

6993

mem_cgroup_id_put_many(memcg, nr_pages)

6995

_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
put_swap_page	Called after dropping swapcache to decrease refcnt to swap entries.
mem_cgroup_commit_charge	mem_cgroup_commit_charge - commit a page charge@page: page to charge@memcg: memcg to charge the page to@lrucare: page might be on LRU already@compound: charge the page as compound or small page* Finalize a charge transaction started by

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