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.