函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\ksm.c Create Date:2022-07-27 17:14:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Like for get_ksm_page, this function can free the *_stable_node and* *_stable_node_dup if the returned tree_page is NULL

函数原型：static struct page *__stable_node_chain(struct stable_node **_stable_node_dup, struct stable_node **_stable_node, struct rb_root *root, bool prune_stale_stable_nodes)

返回类型：struct page

参数：

类型参数名称
struct stable_node **_stable_node_dup
struct stable_node **_stable_node
struct rb_root *root
boolprune_stale_stable_nodes
1505  stable_node等于_stable_node
1506  如果非is_stable_node_chain(stable_node)则
1507  如果is_page_sharing_candidate(stable_node)则
1508  _stable_node_dup等于stable_node
1509  返回:get_ksm_page: checks if the page indicated by the stable node* is still its ksm page, despite having held no reference to it.* In which case we can trust the content of the page, and it* returns the gotten page; but if the page has now been zapped,
1515  * _stable_node_dup = NULL
1516  返回:NULL
1518  返回:stable_node_dup(_stable_node_dup, _stable_node, root, prune_stale_stable_nodes)
调用者
名称描述
chain_prune
chain