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 17:13:40
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ksmd, and unmerge_and_remove_all_rmap_items(), must not touch an mm's* page tables after it has passed through ksm_exit() - which, if necessary,* takes mmap_sem briefly to serialize against them. ksm_exit() does not set

函数原型：static inline bool ksm_test_exit(struct mm_struct *mm)

返回类型：bool

参数：

类型参数名称
struct mm_struct *mm
452  返回:atomic_read( & *@mm_users: The number of users including userspace. * Use mmget()/mmget_not_zero()/mmput() to modify. When this * drops to 0 (i.e. when the task exits and there are no other * temporary reference holders), we also release a reference on *@mm_count (which )恒等于0
调用者
名称描述
find_mergeable_vma
unmerge_ksm_pagesThough it's very tempting to unmerge rmap_items from stable tree rather* than check every pte of a given vma, the locking doesn't quite work for* that - an rmap_item is assigned to the stable tree after inserting ksm* page and upping mmap_sem
scan_get_next_rmap_item