page_counter_cancel

Name:page_counter_cancel - take pages out of the local counter*@counter: counter*@nr_pages: number of pages to cancel

Proto:void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages)

Type:void

Parameter:

Type	Parameter	Name
struct page_counter *	counter
unsigned long	nr_pages

59

new = atomic_long_sub_return(nr_pages, & usage)

60

propagate_protected_usage(counter, new)

62

WARN_ON_ONCE(new < 0)

**Caller**
Name	Describe
page_counter_try_charge	page_counter_try_charge - try to hierarchically charge pages@counter: counter@nr_pages: number of pages to charge@fail: points first counter to hit its limit, if any Returns %true on success, or %false and @fail if the counter or one
page_counter_uncharge	page_counter_uncharge - hierarchically uncharge pages@counter: counter@nr_pages: number of pages to uncharge
hugetlb_cgroup_move_parent	Should be called with hugetlb_lock held.* Since we are holding hugetlb_lock, pages cannot get moved from* active list or uncharged from the cgroup, So no need to get* page reference and test for page active here. This function* cannot fail.

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