mem_cgroup_cancel

Name:mem_cgroup_cancel_charge - cancel a page charge*@page: page to charge*@memcg: memcg to charge the page to*@compound: charge the page as compound or small page* Cancel a charge transaction started by mem_cgroup_try_charge().

Proto:void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, bool compound)

Type:void

Parameter:

Type	Parameter	Name
struct page *	page
struct mem_cgroup *	memcg
bool	compound

**Caller**
Name	Describe
wp_page_copy	Handle the case of a page which we actually need to copy to a new page.* Called with mmap_sem locked and the old page referenced, but* without the ptl held.* High level logic flow:* - Allocate a page, copy the content of the old page to the new one.
do_swap_page	We enter with non-exclusive mmap_sem (to exclude vma changes,* but allow concurrent faults), and pte mapped but not yet locked.* We return with pte unmapped and unlocked.* We return with the mmap_sem locked or unlocked in the same cases
do_anonymous_page	We enter with non-exclusive mmap_sem (to exclude vma changes,* but allow concurrent faults), and pte mapped but not yet locked.* We return with mmap_sem still held, but pte unmapped and unlocked.
do_cow_fault
unuse_pte	No need to decide whether this PTE shares the swap entry with others,* just let do_wp_page work it out if a write is requested later - to* force COW, vm_page_prot omits write permission from any private vma.
__do_huge_pmd_anonymous_page
do_huge_pmd_wp_page_fallback
do_huge_pmd_wp_page
collapse_huge_page
mcopy_atomic_pte

Function report