Date: Mon, 5 Nov 2012 16:40:42 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r242617 - head/sys/kern Message-ID: <201211051640.qA5GegmV038667@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: kib Date: Mon Nov 5 16:40:42 2012 New Revision: 242617 URL: http://svnweb.freebsd.org/changeset/base/242617 Log: A clarification to the behaviour of the active vnode list management regarding the vnode page cleaning. In collaboration with: pho MFC after: 1 week Modified: head/sys/kern/vfs_subr.c Modified: head/sys/kern/vfs_subr.c ============================================================================== --- head/sys/kern/vfs_subr.c Mon Nov 5 15:23:54 2012 (r242616) +++ head/sys/kern/vfs_subr.c Mon Nov 5 16:40:42 2012 (r242617) @@ -2507,6 +2507,9 @@ vinactive(struct vnode *vp, struct threa * Before moving off the active list, we must be sure that any * modified pages are on the vnode's dirty list since these will * no longer be checked once the vnode is on the inactive list. + * Because the vnode vm object keeps a hold reference on the vnode + * if there is at least one resident non-cached page, the vnode + * cannot leave the active list without the page cleanup done. */ obj = vp->v_object; if (obj != NULL && (obj->flags & OBJ_MIGHTBEDIRTY) != 0) {
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201211051640.qA5GegmV038667>