VINVALBUF(9) OpenBSD Kernel Manual VINVALBUF(9)NAMEvinvalbuf - flush and invalidate all buffers associated with a vnode
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
int
vinvalbuf(struct vnode *vp, int flags, struct ucred *cred, struct proc
*p, int slpflag, int slptimeo);
DESCRIPTION
The vinvalbuf() function invalidates all of the buffers associated with
the given vnode. This includes buffers on the clean list and the dirty
list. If the V_SAVE flag is specified then the buffers on the dirty list
are synced prior to being released. If the V_SAVEMETA flag is set,
indirect blocks will not be flushed.
Its arguments are:
vp A pointer to the vnode whose buffers will be invalidated.
flags The supported flags are V_SAVE and V_SAVEMETA. V_SAVE
indicates that dirty buffers should be synced with the
disk. V_SAVEMETA indicates that indirect blocks should not
be flushed.
cred The user credentials that are used to VOP_FSYNC(9) buffers
if V_SAVE is set.
p The process responsible for this call.
slpflag The slp flag that will be used in the priority of any
sleeps in the function.
slptimeo The timeout for any sleeps in the function.
LOCKS
The vnode is assumed to be locked prior to the call and remains locked
upon return.
RETURN VALUES
A value of 0 is returned on success.
PSEUDOCODE
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0);
VOP_UNLOCK(devvp, 0, p);
if (error)
return (error);
ERRORS
[ENOSPC] The file system is full. (With V_SAVE)
[EDQUOT] Disc quota exceeded. (With V_SAVE)
[EWOULDBLOCK]
Sleep operation timed out. (See slptimeo)
[ERESTART] A signal needs to be delivered and the system call should
be restarted. (With PCATCH set in slpflag)
[EINTR] The system has been interrupted by a signal. (With PCATCH
set in slpflag)
SEE ALSOtsleep(9), vnode(9)AUTHORS
This man page was originally written by Chad David <davidc@acns.ab.ca>
for FreeBSD.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
