Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.

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$FreeBSD: head/share/man/man9/vinvalbuf.9 79446 2001-07-09 06:47:10Z alfred $

.Dd July 7, 2001 .Dt VINVALBUF 9 .Os .Sh NAME .Nm vinvalbuf .Nd "Flushes and invalidates all buffers associated with a vnode" .Sh SYNOPSIS .Fd #include <sys/vnode.h> .Ft int .Fo vinvalbuf .Fa "struct vnode *vp" .Fa "int flags" .Fa "struct ucred *cred" .Fa "struct proc *p" .Fa "int slpflag" .Fa "int slptimeo" .Fc .Sh DESCRIPTION The .Nm 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 there is a VM Object associated with the vnode it is removed.

p Its arguments are: l -tag -width spltimeo t Ar vp A pointer to the vnode whose buffers will be invalidated. t Ar flags The only supported flag is V_SAVE and it indicates that dirty buffers should by synced. t Ar cred The user credentials that are used to .Fn VOP_FSYNC "" buffers if V_SAVE is set. t Ar p The process responsible for this call. t Ar slpflag The slp flag that will be used in the priority of any sleeps in the function. t Ar slptimeo The timeout for any sleeps in the function. .El .Sh LOCKS The vnode is assumed to be locked prior to the call and remains locked upon return.

p Giant must be held by prior to the call and remains locked upon return. .Sh RETURN VALUES A 0 value is returned on success. .Sh PSEUDOCODE d -literal 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); .Ed .Sh ERRORS l -tag -width Er t Bq Er ENOSPC The filesystem is full. (With V_SAVE) t Bq Er EDQUOT Disc quota exceeded. (With V_SAVE) t Bq Er EWOULDBLOCK Sleep operation timed out (See slptimeo) t Bq Er ERESTART A signal needs to be delivered and the system call should be restarted (With PCATCH set in slpflag) t Bq Er EINTR The system has been interrupted by a signal (With PCATCH set in slpflag) .El .Sh SEE ALSO .Xr brelse 9 .Xr bremfree 9 .Xr VOP_FSYNC 9 .Xr tsleep 9 .Sh AUTHORS This man page was written by Chad David.