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

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$FreeBSD$

.Dd October 20, 2008 .Dt VINVALBUF 9 .Os .Sh NAME .Nm vinvalbuf .Nd "flushes and invalidates all buffers associated with a vnode" .Sh SYNOPSIS n sys/param.h n sys/vnode.h .Ft int .Fn vinvalbuf "struct vnode *vp" "int flags" "struct ucred *cred" "int slpflag" "int slptimeo" .Sh DESCRIPTION The .Fn 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 .Dv 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 ".Fa spltimeo" t Fa vp A pointer to the vnode whose buffers will be invalidated. t Fa flags The only supported flag is .Dv V_SAVE and it indicates that dirty buffers should be synced with the disk. t Fa cred The user credentials that are used to .Xr VOP_FSYNC 9 buffers if .Dv V_SAVE is set. t Fa slpflag The slp flag that will be used in the priority of any sleeps in the function. t Fa 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 .Va 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 -offset indent vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); error = vinvalbuf(devvp, V_SAVE, cred, 0, 0); VOP_UNLOCK(devvp, 0); if (error) return (error); .Ed .Sh ERRORS l -tag -width Er t Bq Er ENOSPC The file system is full. (With .Dv V_SAVE ) t Bq Er EDQUOT Disc quota exceeded. (With .Dv V_SAVE ) t Bq Er EWOULDBLOCK Sleep operation timed out. (See .Fa slptimeo ) t Bq Er ERESTART A signal needs to be delivered and the system call should be restarted. (With .Dv PCATCH set in .Fa slpflag ) t Bq Er EINTR The system has been interrupted by a signal. (With .Dv PCATCH set in .Fa slpflag ) .El .Sh SEE ALSO .Xr brelse 9 , .Xr bremfree 9 , .Xr tsleep 9 , .Xr VOP_FSYNC 9 .Sh AUTHORS This manual page was written by .An Chad David Aq davidc@acns.ab.ca .