Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\swapfile.c Create Date:2022-07-28 15:18:40
Last Modify:2020-03-17 22:19:49 Copyright©Brick
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Name:Use this swapdev's extent info to locate the (PAGE_SIZE) block which* corresponds to page offset for the specified swap entry.* Note that the type of this function is sector_t, but it returns page offset* into the bdev, not sector offset.

Proto:static sector_t map_swap_entry(swp_entry_t entry, struct block_device **bdev)

Type:sector_t

Parameter:

TypeParameterName
swp_entry_tentry
struct block_device **bdev
2263  sis = swp_swap_info(entry)
2264  bdev = swap device or bdev of swap file
2266  offset = Extract the `offset' field from a swp_entry_t. The swp_entry_t is in* arch-independent format
2267  se = offset_to_swap_extent(sis, offset)
2268  Return start_block + offset - start_page
Caller
NameDescribe
map_swap_pageReturns the page offset into bdev for the specified page's swap entry.