Date: Thu, 3 Oct 2013 06:14:44 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r256015 - stable/9/sys/kern Message-ID: <201310030614.r936EirI052329@svn.freebsd.org>
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Author: kib Date: Thu Oct 3 06:14:44 2013 New Revision: 256015 URL: http://svnweb.freebsd.org/changeset/base/256015 Log: MFC r255880: Acquire a hold reference on the vnode when a knote is instantiated. Modified: stable/9/sys/kern/vfs_subr.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/kern/vfs_subr.c ============================================================================== --- stable/9/sys/kern/vfs_subr.c Thu Oct 3 01:53:17 2013 (r256014) +++ stable/9/sys/kern/vfs_subr.c Thu Oct 3 06:14:44 2013 (r256015) @@ -4525,6 +4525,7 @@ vfs_kqfilter(struct vop_kqfilter_args *a if (vp->v_pollinfo == NULL) return (ENOMEM); knl = &vp->v_pollinfo->vpi_selinfo.si_note; + vhold(vp); knlist_add(knl, kn, 0); return (0); @@ -4540,6 +4541,7 @@ filt_vfsdetach(struct knote *kn) KASSERT(vp->v_pollinfo != NULL, ("Missing v_pollinfo")); knlist_remove(&vp->v_pollinfo->vpi_selinfo.si_note, kn, 0); + vdrop(vp); } /*ARGSUSED*/
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