函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\frontswap.c Create Date:2022-07-27 16:52:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__frontswap_curr_pages

函数原型：static unsigned long __frontswap_curr_pages(void)

返回类型：unsigned long

参数：无

373  totalpages等于0
374  struct swap_info_struct * si = NULL
376  assert_spin_locked( & swap_lock)
377  plist_for_each_entry - iterate over list of given type*@pos: the type * to use as a loop counter*@head: the head for your list*@mem: the name of the list_head within the struct(si, & all active swap_info_structs* protected with swap_lock, and ordered by priority., list)
378  totalpages加等于atomic_read( & swap pages in-use counter )
379  返回:totalpages
调用者
名称描述
__frontswap_shrinkUsed to check if it's necessory and feasible to unuse pages.* Return 1 when nothing to do, 0 when need to shink pages,* error code when there is an error.
frontswap_curr_pagesCount and return the number of frontswap pages across all* swap devices. This is exported so that backend drivers can* determine current usage without reading debugfs.