1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd March 15, 2019 30.Dt VOP_INACTIVE 9 31.Os 32.Sh NAME 33.Nm VOP_INACTIVE , 34.Nm VOP_RECLAIM 35.Nd reclaim file system resources for a vnode 36.Sh SYNOPSIS 37.In sys/param.h 38.In sys/vnode.h 39.Ft int 40.Fn VOP_INACTIVE "struct vnode *vp" "struct thread *td" 41.Ft int 42.Fn VOP_RECLAIM "struct vnode *vp" "struct thread *td" 43.Sh DESCRIPTION 44The arguments are: 45.Bl -tag -width 2n 46.It Fa vp 47The vnode being reclaimed. 48.El 49.Pp 50.Fn VOP_INACTIVE 51is usually called when the kernel is no longer using the vnode. 52However, there is no guarantee that it will be called at all, for example if 53the last reference was dropped while the vnode lock could not be upgraded 54to exclusive without sleeping. 55This may be 56because the reference count reaches zero or it may be that the 57file system is being forcibly unmounted while there are open files. 58It can be used to reclaim space on the last close of an 59.Sq open but deleted 60file. 61.Pp 62.Fn VOP_RECLAIM 63is called when a vnode is being reused for a different file system. 64Any file system specific resources associated with the vnode should be 65freed. 66.Sh LOCKS 67For both 68.Fn VOP_INACTIVE 69and 70.Fn VOP_RECLAIM , 71the 72.Fa vp 73will be exclusively locked on entry, and must be left exclusively 74locked on return. 75.Sh SEE ALSO 76.Xr vnode 9 77.Sh AUTHORS 78This manual page was written by 79.An Doug Rabson . 80