table of contents
VCOUNT(9) | 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.January 19, 2012 | Linux 4.19.0-10-amd64 |