函数逻辑报告

函数名称：may_umount - check if a mount point is busy*@mnt: root of mount* This is called to check if a mount point has any* open files, pwds, chroots or sub mounts. If the* mount has sub mounts this will return busy* regardless of whether the sub mounts are busy.

函数原型：int may_umount(struct vfsmount *mnt)

返回类型：int

参数：