Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\swapfile.c Create Date:2022-07-28 15:17:45
Last Modify:2020-03-17 22:19:49 Copyright©Brick
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Name:swap_swapcount

Proto:static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry)

Type:int

Parameter:

TypeParameterName
struct swap_info_struct *si
swp_entry_tentry
1464  count = 0
1465  offset = Extract the `offset' field from a swp_entry_t. The swp_entry_t is in* arch-independent format
1468  ci = Determine the locking method in use for this device. Return* swap_cluster_info if SSD-style cluster-based locking is in place.
1469  count = swap_count(vmalloc'ed array of usage counts [offset])
1470  unlock_cluster_or_swap_info(si, ci)
1471  Return count
Caller
NameDescribe
__swp_swapcountHow many references to @entry are currently swapped out?* This does not give an exact answer when swap count is continued,* but does include the high COUNT_CONTINUED flag to allow for that.