mnt_add_count

函数名称：vfsmount lock must be held for read

函数原型：static inline void mnt_add_count(struct mount *mnt, int n)

返回类型：void

参数：

类型	参数	名称
struct mount *	mnt
int	n

**调用者**
名称	描述
__legitimize_mnt	all under rcu_read_lock
mnt_set_mountpoint	vfsmount lock must be held for write
mnt_change_mountpoint
mntput_no_expire
mntget
umount_tree	mount_lock must be held* namespace_sem must be held for write
SYSCALL_DEFINE2	pivot_root Semantics:* Moves the root file system of the current process to the directory put_old,* makes new_root as the new root file system of the current process, and sets* root/cwd of all processes which had them on the current root to new_root

函数逻辑报告