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 17:13:49
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：alloc_stable_node_chain

函数原型：static struct stable_node *alloc_stable_node_chain(struct stable_node *dup, struct rb_root *root)

返回类型：struct stable_node

参数：

类型参数名称
struct stable_node *dup
struct rb_root *root
593  chain等于alloc_stable_node()
594  VM_BUG_ON(is_stable_node_chain(dup))
595  如果此条件成立可能性大(为编译器优化)(chain)则
596  INIT_HLIST_HEAD( & hlist)
597  chain_prune_time等于jiffies
598  rmap_hlist_len等于STABLE_NODE_CHAIN can be any negative number in* rmap_hlist_len negative range, but better not -1 to be able* to reliably detect underflows.
602  The number of stable_node chains 自加
609  rb_replace_node( & when node of stable tree , & when node of stable tree , root)
618  stable_node_chain_add_dup(dup, chain)
620  返回:chain
调用者
名称描述
stable_tree_searchstable_tree_search - search for page inside the stable tree* This function checks if there is a page inside the stable tree* with identical content to the page that we are scanning right now
stable_tree_insertstable_tree_insert - insert stable tree node pointing to new ksm page* into the stable tree.* This function returns the stable tree node just allocated on success,* NULL otherwise.