函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\swapfile.c Create Date:2022-07-27 16:46:37
Last Modify:2020-03-17 22:19:49 Copyright©Brick
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函数名称：first_se

函数原型：static inline struct swap_extent *first_se(struct swap_info_struct *sis)

返回类型：struct swap_extent

参数：

类型参数名称
struct swap_info_struct *sis
157  rb等于This function returns the first node (in sort order) of the tree.
158  返回:rb_entry(rb, structswap_extent, rb_node)
调用者
名称描述
discard_swapswapon tell device that all the old swap contents can be discarded,* to allow the swap device to optimize its wear-levelling.