FS_UNMOUNT
mask = (FS_UNMOUNT);
BUILD_BUG_ON(IN_UNMOUNT != FS_UNMOUNT);
fsnotify_inode(inode, FS_UNMOUNT);
FS_UNMOUNT | FS_Q_OVERFLOW | FS_IN_IGNORED | \
} else if (mask & (FS_DELETE_SELF|FS_UNMOUNT|FS_MOVE_SELF)) {
else if (mask & (FS_DELETE_SELF|FS_UNMOUNT|FS_MOVE_SELF))
FS_MOVE_SELF | FS_UNMOUNT)