Index: share/man/man9/VOP_INACTIVE.9 =================================================================== --- share/man/man9/VOP_INACTIVE.9 +++ share/man/man9/VOP_INACTIVE.9 @@ -28,7 +28,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 27, 2014 +.Dd March 15, 2019 .Dt VOP_INACTIVE 9 .Os .Sh NAME @@ -50,13 +50,16 @@ .El .Pp .Fn VOP_INACTIVE -is called when the kernel is no longer using the vnode. +is usually called when the kernel is no longer using the vnode. +However, there is no guarantee that it will be called at all, for example if +the last reference was dropped while the vnode lock could not be upgraded +to exclusive without sleeping. This may be because the reference count reaches zero or it may be that the file system is being forcibly unmounted while there are open files. -It can be used to reclaim space for +It can be used to reclaim space on the last close of an .Sq open but deleted -files. +file. .Pp .Fn VOP_RECLAIM is called when a vnode is being reused for a different file system.