hugetlbfs_pagecache

Name:Return whether there is a pagecache page to back given address within VMA.* Caller follow_hugetlb_page() holds page_table_lock so we cannot lock_page.

Proto:static bool hugetlbfs_pagecache_present(struct hstate *h, struct vm_area_struct *vma, unsigned long address)

Type:bool

Parameter:

Type	Parameter	Name
struct hstate *	h
struct vm_area_struct *	vma
unsigned long	address

3756

mapping = f_mapping

3757

idx = Convert the address within this vma to the page offset within* the mapping, in pagecache page units; huge pages here.

3759

page = d_get_page - find and get a page reference*@mapping: the address_space to search*@offset: the page index* Looks up the page cache slot at @mapping & @offset. If there is a* page cache page, it is returned with an increased refcount.

3760

If page Then Perform a free_page(), also freeing any swap cache associated with* this page if it is the last user of the page.

3762

Return page != NULL

**Caller**
Name	Describe
follow_hugetlb_page

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Function report