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Command: vwaitforio | Section: 9 | Source: OpenBSD | File: vwaitforio.9
VWAITFORIO(9) FreeBSD Kernel Developer's Manual VWAITFORIO(9)
NAME
vwaitforio - wait for all outstanding asynchronous writes
SYNOPSIS
#include <sys/types.h>
#include <sys/vnode.h>
int
vwaitforio(struct vnode *vp, int slpflag, char *wmesg,
uint64_t slptimeo);
DESCRIPTION
The vwaitforio() call sleeps until all asynchronous writes associated
with the vnode vp finish. This is used by functions that need to make
sure that the writes they initiated have completed.
The vwaitforio() call sleeps at priority PRIBIO + 1. The slpflag, wmesg,
and slptimeo arguments indicate flags to be passed to tsleep_nsec(9).
This function must be called at splbio(9).
It may be important to ensure that no other process submits asynchronous
writes while a process is waiting for I/O on this vnode. Otherwise,
vwaitforio() may never return.
RETURN VALUES
The vwaitforio() function returns 0 on success. See tsleep(9) for
possible error returns.
SEE ALSO
tsleep(9), vnode(9)
FreeBSD 14.1-RELEASE-p8 July 19, 2019 FreeBSD 14.1-RELEASE-p8