attach

函数名称：If multiple processes watch the same inode with dnotify there is only one* dnotify mark in inode->i_fsnotify_marks but we chain a dnotify_struct* onto that mark. This function either attaches the new dnotify_struct onto

函数原型：static int attach_dn(struct dnotify_struct *dn, struct dnotify_mark *dn_mark, fl_owner_t id, int fd, struct file *filp, __u32 mask)

返回类型：int

参数：

类型	参数	名称
struct dnotify_struct *	dn
struct dnotify_mark *	dn_mark
fl_owner_t	id
int	fd
struct file *	filp
__u32	mask

**调用者**
名称	描述
fcntl_dirnotify	When a process calls fcntl to attach a dnotify watch to a directory it ends* up here. Allocate both a mark for fsnotify to add and a dnotify_struct to be* attached to the fsnotify_mark.

函数逻辑报告