memory_bm_create

Name:memory_bm_create - Allocate memory for a memory bitmap.

Proto:static int memory_bm_create(struct memory_bitmap *bm, gfp_t gfp_mask, int safe_needed)

Type:int

Parameter:

Type	Parameter	Name
struct memory_bitmap *	bm
gfp_t	gfp_mask
int	safe_needed

651

chain_init( & ca, gfp_mask, safe_needed)

652

Initialization list head

654

error = reate_mem_extents - Create a list of memory extents.*@list: List to put the extents into.*@gfp_mask: Mask to use for memory allocations.* The extents represent contiguous ranges of PFNs.

655

If error Then Return error

661

zone = reate_zone_bm_rtree - Create a radix tree for one zone.* Allocated the mem_zone_bm_rtree structure and initializes it.* This function also allocated and builds the radix tree for the* zone.

663

If Not zone Then

664

error = -ENOMEM

665

Go to Error

667

list_add_tail - add a new entry*@new: new entry to be added*@head: list head to add it before* Insert a new entry before the specified head.* This is useful for implementing queues.

670

list of pages used to store zone bitmap objects and bitmap block objects = he chain

671

memory_bm_position_reset(bm)

672

Exit :

673

_mem_extents - Free a list of memory extents.*@list: List of extents to free.

674

Return error

676

Error :

677

list of pages used to store zone bitmap objects and bitmap block objects = he chain

678

memory_bm_free(bm, PG_UNSAFE_CLEAR)

679

Go to Exit

**Caller**
Name	Describe
create_basic_memory_bitmaps	reate_basic_memory_bitmaps - Create bitmaps to hold basic page information
hibernate_preallocate_memory	hibernate_preallocate_memory - Preallocate memory for hibernation image
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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