try_to_munlock

Name:ry_to_munlock - try to munlock a page*@page: the page to be munlocked* Called from munlock code. Checks all of the VMAs mapping the page* to make sure nobody else has this page mlocked. The page will be

Proto:void try_to_munlock(struct page *page)

Type:void

Parameter:

Type	Parameter	Name
struct page *	page

1778

struct rmap_walk_control rwc = { executed on each vma where page is mapped = @arg: enum ttu_flags will be passed to this argument, passed to rmap_one() and invalid_vma() = (void * ) munlock mode , for checking traversing termination condition = page_not_mapped, for getting anon_lock by optimized way rather than default = Similar to page_get_anon_vma() except it locks the anon_vma.* Its a little more complex as it tries to keep the fast path to a single* atomic op -- the trylock. If we fail the trylock, we fall back to getting a, }

1786

VM_BUG_ON_PAGE(!PageLocked(page) || PageLRU(page), page)

1787

VM_BUG_ON_PAGE(PageCompound(page) && PageDoubleMap indicates that the compound page is mapped with PTEs as well* as PMDs.* This is required for optimization of rmap operations for THP: we can postpone* per small page mapcount accounting (and its overhead from atomic operations), page)

1789

rmap_walk(page, & rwc)

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Function report