NAME

     vcount, count_dev — get total number of references to a device

SYNOPSIS

     #include <sys/param.h>
     #include <sys/time.h>
     #include <sys/conf.h>
     #include <sys/vnode.h>

     int
     vcount(struct vnode *vp);

     int
     count_dev(struct cdev *dev);

DESCRIPTION

     vcount() is used to get the number of references to a particular device.  It allows for the
     fact that multiple vnodes may reference the same device.  count_dev() does the same thing as
     vcount(), but takes a struct cdev rather than a struct vnode pointer as an argument.

RETURN VALUES

     vcount() and count_dev() both return the number of references to the device.

SEE ALSO

     VFS(9), vnode(9)

AUTHORS

     This manual page was written by Andrew Stevenson.