swap_range_free

Name:swap_range_free

Proto:static void swap_range_free(struct swap_info_struct *si, unsigned long offset, unsigned int nr_entries)

Type:void

Parameter:

Type	Parameter	Name
struct swap_info_struct *	si
unsigned long	offset
unsigned int	nr_entries

705

end = offset + nr_entries - 1

706

void( * swap_slot_free_notify)(struct block_device * , unsigned long)

708

If offset < dex of first free in swap_map Then dex of first free in swap_map = offset

710

If end > dex of last free in swap_map Then

711

was_full = Not dex of last free in swap_map

713

dex of last free in swap_map = end

714

If was_full && SWP_USED etc: see above & SWP_WRITEOK Then add_to_avail_list(si)

717

atomic_long_add(nr_entries, & nr_swap_pages)

718

umber of those currently in use -= nr_entries

719

If SWP_USED etc: see above & SWP_BLKDEV Then swap_slot_free_notify = swap_slot_free_notify

722

Else swap_slot_free_notify = NULL

724

When offset <= end cycle

725

frontswap_invalidate_page(strange name for an index , offset)

726

If swap_slot_free_notify Then swap_slot_free_notify(swap device or bdev of swap file , offset)

728

**Caller**
Name	Describe
swap_free_cluster
swap_entry_free

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