NAME
vwakeup —
update outstanding I/O count and do
wakeup on a vnode
SYNOPSIS
#include
<sys/param.h>
#include <sys/vnode.h>
void
vwakeup(struct
vnode *vp);
DESCRIPTION
Thevwakeup()
function updates the number of outstanding I/O operations on the target vnode,
stored in its v_numoutput field. If the target vnode has
the VBIOWAIT flag set in its
v_bioflag field and has no outstanding I/O operations
remaining, a wakeup(9) is performed as well.
The
vwakeup()
function must be called at
splbio(9).
SEE ALSO
HISTORY
This document first appeared in OpenBSD 3.7.
CAVEATS
Calling vwakeup() more times than the
number of outstanding I/O operations will cause the system to
panic(9).