get_image_page

Name:get_image_page - Allocate a page for a hibernation image

Proto:static void *get_image_page(gfp_t gfp_mask, int safe_needed)

Type:void

Parameter:

Type	Parameter	Name
gfp_t	gfp_mask
int	safe_needed

160

res = get_zeroed_page(gfp_mask)

161

If safe_needed Then When res && swsusp_page_is_free(virt_to_page(kaddr) returns a valid pointer if and only if* virt_addr_valid(kaddr) returns true.(res)) cycle

164

swsusp_set_page_forbidden(virt_to_page(kaddr) returns a valid pointer if and only if* virt_addr_valid(kaddr) returns true.(res))

165

allocated_unsafe_pages++

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res = get_zeroed_page(gfp_mask)

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If res Then

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swsusp_set_page_forbidden(virt_to_page(kaddr) returns a valid pointer if and only if* virt_addr_valid(kaddr) returns true.(res))

170

Each page frame allocated for creating the image is marked by setting the* corresponding bits in forbidden_pages_map and free_pages_map simultaneously

172

Return res

**Caller**
Name	Describe
__get_safe_page
chain_alloc
alloc_rtree_node	alloc_rtree_node - Allocate a new node and add it to the radix tree.* This function is used to allocate inner nodes as well as the* leave nodes of the radix tree. It also adds the node to the* corresponding linked list passed in by the *list parameter.
snapshot_read_next	snapshot_read_next - Get the address to read the next image page from.@handle: Snapshot handle to be used for the reading. On the first call, @handle should point to a zeroed snapshot_handle* structure
prepare_image	prepare_image - Make room for loading hibernation image
snapshot_write_next	snapshot_write_next - Get the address to store the next image page.@handle: Snapshot handle structure to guide the writing. On the first call, @handle should point to a zeroed snapshot_handle* structure

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