SIMPLE SOLUTIONS

VCOUNT(9FREEBSD) - man page online | system kernel interfaces

Get total number of references to a device.

Chapter
January 19, 2012
VCOUNT(9)                         BSD Kernel Developer's Manual                         VCOUNT(9)

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.
BSD January 19, 2012 BSD
This manual Reference Other manuals
vcount(9freebsd) referred by count_dev(9freebsd)
refer to VFS(9freebsd) | vnode(9freebsd)