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Command: vwakeup | Section: 9 | Source: OpenBSD | File: vwakeup.9
VWAKEUP(9) FreeBSD Kernel Developer's Manual VWAKEUP(9)
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
The vwakeup() 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
panic(9), splbio(9), vnode(9), vwaitforio(9), wakeup(9)
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).
FreeBSD 14.1-RELEASE-p8 August 14, 2013 FreeBSD 14.1-RELEASE-p8