diff options
4 files changed, 56 insertions, 29 deletions
diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c b/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c index 94383d6..848007e 100644 --- a/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c +++ b/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c @@ -91,11 +91,11 @@ traverse(vnode_t **cvpp, int lktype) error = vfs_busy(vfsp, 0); /* * tvp is NULL for *cvpp vnode, which we can't unlock. + * At least some callers expect the reference to be + * maintained to the original *cvpp */ if (tvp != NULL) vput(cvp); - else - vrele(cvp); if (error) return (error); diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c b/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c index 59944a1..4bcdfc6 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/gfs.c @@ -90,7 +90,7 @@ * gfs_dir_lookup() * gfs_dir_readdir() * - * gfs_vop_inactive() + * gfs_vop_reclaim() * gfs_vop_lookup() * gfs_vop_readdir() * gfs_vop_map() @@ -435,6 +435,8 @@ gfs_readdir_fini(gfs_readdir_state_t *st, int error, int *eofp, int eof) int gfs_lookup_dot(vnode_t **vpp, vnode_t *dvp, vnode_t *pvp, const char *nm) { + int ltype; + if (*nm == '\0' || strcmp(nm, ".") == 0) { VN_HOLD(dvp); *vpp = dvp; @@ -444,11 +446,15 @@ gfs_lookup_dot(vnode_t **vpp, vnode_t *dvp, vnode_t *pvp, const char *nm) ASSERT(dvp->v_flag & VROOT); VN_HOLD(dvp); *vpp = dvp; + ASSERT_VOP_ELOCKED(dvp, "gfs_lookup_dot: non-locked dvp"); } else { + ltype = VOP_ISLOCKED(dvp); + VOP_UNLOCK(dvp, 0); VN_HOLD(pvp); *vpp = pvp; + vn_lock(*vpp, LK_EXCLUSIVE | LK_RETRY); + vn_lock(dvp, ltype | LK_RETRY); } - vn_lock(*vpp, LK_EXCLUSIVE | LK_RETRY); return (0); } @@ -618,7 +624,7 @@ gfs_root_create_file(size_t size, vfs_t *vfsp, vnodeops_t *ops, ino64_t ino) /* * gfs_file_inactive() * - * Called from the VOP_INACTIVE() routine. If necessary, this routine will + * Called from the VOP_RECLAIM() routine. If necessary, this routine will * remove the given vnode from the parent directory and clean up any references * in the VFS layer. * @@ -1215,15 +1221,15 @@ gfs_vop_map(vnode_t *vp, offset_t off, struct as *as, caddr_t *addrp, #endif /* sun */ /* - * gfs_vop_inactive: VOP_INACTIVE() entry point + * gfs_vop_reclaim: VOP_RECLAIM() entry point (solaris' VOP_INACTIVE()) * * Given a vnode that is a GFS file or directory, call gfs_file_inactive() or * gfs_dir_inactive() as necessary, and kmem_free()s associated private data. */ /* ARGSUSED */ int -gfs_vop_inactive(ap) - struct vop_inactive_args /* { +gfs_vop_reclaim(ap) + struct vop_reclaim_args /* { struct vnode *a_vp; struct thread *a_td; } */ *ap; @@ -1236,6 +1242,7 @@ gfs_vop_inactive(ap) else gfs_file_inactive(vp); + vnode_destroy_vobject(vp); VI_LOCK(vp); vp->v_data = NULL; VI_UNLOCK(vp); diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c index 3cc70b2..01fae24 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c @@ -603,16 +603,27 @@ zfsctl_freebsd_root_lookup(ap) int nameiop = ap->a_cnp->cn_nameiop; char nm[NAME_MAX + 1]; int err; + int ltype; if ((flags & ISLASTCN) && (nameiop == RENAME || nameiop == CREATE)) return (EOPNOTSUPP); ASSERT(ap->a_cnp->cn_namelen < sizeof(nm)); strlcpy(nm, ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen + 1); - err = zfsctl_root_lookup(dvp, nm, vpp, NULL, 0, NULL, cr, NULL, NULL, NULL); - if (err == 0 && (nm[0] != '.' || nm[1] != '\0')) + if (err == 0 && (nm[0] != '.' || nm[1] != '\0')) { + ltype = VOP_ISLOCKED(dvp); + if (flags & ISDOTDOT) { + VN_HOLD(*vpp); + VOP_UNLOCK(dvp, 0); + } vn_lock(*vpp, LK_EXCLUSIVE | LK_RETRY); + if (flags & ISDOTDOT) { + VN_RELE(*vpp); + vn_lock(dvp, ltype| LK_RETRY); + } + } + return (err); } @@ -625,8 +636,8 @@ static struct vop_vector zfsctl_ops_root = { .vop_access = zfsctl_common_access, .vop_readdir = gfs_vop_readdir, .vop_lookup = zfsctl_freebsd_root_lookup, - .vop_inactive = gfs_vop_inactive, - .vop_reclaim = zfsctl_common_reclaim, + .vop_inactive = VOP_NULL, + .vop_reclaim = gfs_vop_reclaim, #ifdef TODO .vop_pathconf = zfsctl_pathconf, #endif @@ -679,7 +690,7 @@ zfsctl_unmount_snap(zfs_snapentry_t *sep, int fflags, cred_t *cr) * the sd_lock mutex held by our caller. */ ASSERT(svp->v_count == 1); - gfs_vop_inactive(svp, cr, NULL); + gfs_vop_reclaim(svp, cr, NULL); kmem_free(sep->se_name, strlen(sep->se_name) + 1); kmem_free(sep, sizeof (zfs_snapentry_t)); @@ -949,7 +960,7 @@ zfsctl_snapdir_lookup(ap) avl_index_t where; zfsvfs_t *zfsvfs = dvp->v_vfsp->vfs_data; int err; - int flags = 0; + int ltype, flags = 0; /* * No extended attributes allowed under .zfs @@ -973,7 +984,6 @@ zfsctl_snapdir_lookup(ap) return (SET_ERROR(ENOENT)); ZFS_ENTER(zfsvfs); - if (gfs_lookup_dot(vpp, dvp, zfsvfs->z_ctldir, nm) == 0) { ZFS_EXIT(zfsvfs); return (0); @@ -1420,8 +1430,8 @@ static struct vop_vector zfsctl_ops_shares = { .vop_access = zfsctl_common_access, .vop_readdir = zfsctl_shares_readdir, .vop_lookup = zfsctl_shares_lookup, - .vop_inactive = gfs_vop_inactive, - .vop_reclaim = zfsctl_common_reclaim, + .vop_inactive = VOP_NULL, + .vop_reclaim = gfs_vop_reclaim, .vop_fid = zfsctl_shares_fid, }; #endif /* !sun */ @@ -1449,8 +1459,9 @@ zfsctl_snapshot_mknode(vnode_t *pvp, uint64_t objset) return (vp); } + static int -zfsctl_snapshot_inactive(ap) +zfsctl_snapshot_reclaim(ap) struct vop_inactive_args /* { struct vnode *a_vp; struct thread *a_td; @@ -1458,19 +1469,20 @@ zfsctl_snapshot_inactive(ap) { vnode_t *vp = ap->a_vp; cred_t *cr = ap->a_td->td_ucred; - struct vop_inactive_args iap; + struct vop_reclaim_args iap; zfsctl_snapdir_t *sdp; zfs_snapentry_t *sep, *next; int locked; vnode_t *dvp; - if (vp->v_count > 0) - goto end; - VERIFY(gfs_dir_lookup(vp, "..", &dvp, cr, 0, NULL, NULL) == 0); sdp = dvp->v_data; VOP_UNLOCK(dvp, 0); - + /* this may already have been unmounted */ + if (sdp == NULL) { + VN_RELE(dvp); + return (0); + } if (!(locked = MUTEX_HELD(&sdp->sd_lock))) mutex_enter(&sdp->sd_lock); @@ -1494,7 +1506,6 @@ zfsctl_snapshot_inactive(ap) mutex_exit(&sdp->sd_lock); VN_RELE(dvp); -end: /* * Dispose of the vnode for the snapshot mount point. * This is safe to do because once this entry has been removed @@ -1503,7 +1514,9 @@ end: * creating a new vnode. */ iap.a_vp = vp; - return (gfs_vop_inactive(&iap)); + gfs_vop_reclaim(&iap); + return (0); + } static int @@ -1587,8 +1600,15 @@ zfsctl_snapshot_lookup(ap) error = zfsctl_root_lookup(zfsvfs->z_ctldir, "snapshot", vpp, NULL, 0, NULL, cr, NULL, NULL, NULL); - if (error == 0) + if (error == 0) { + int ltype = VOP_ISLOCKED(dvp); + VN_HOLD(*vpp); + VOP_UNLOCK(dvp, 0); vn_lock(*vpp, LK_EXCLUSIVE | LK_RETRY); + VN_RELE(*vpp); + vn_lock(dvp, ltype | LK_RETRY); + } + return (error); } @@ -1640,9 +1660,9 @@ zfsctl_snapshot_vptocnp(struct vop_vptocnp_args *ap) */ static struct vop_vector zfsctl_ops_snapshot = { .vop_default = &default_vnodeops, - .vop_inactive = zfsctl_snapshot_inactive, + .vop_inactive = VOP_NULL, .vop_lookup = zfsctl_snapshot_lookup, - .vop_reclaim = zfsctl_common_reclaim, + .vop_reclaim = zfsctl_snapshot_reclaim, .vop_getattr = zfsctl_snapshot_getattr, .vop_fid = zfsctl_snapshot_fid, .vop_vptocnp = zfsctl_snapshot_vptocnp, diff --git a/sys/cddl/contrib/opensolaris/uts/common/sys/gfs.h b/sys/cddl/contrib/opensolaris/uts/common/sys/gfs.h index f3fc634..0409172 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/sys/gfs.h +++ b/sys/cddl/contrib/opensolaris/uts/common/sys/gfs.h @@ -149,7 +149,7 @@ extern int gfs_get_parent_ino(vnode_t *, cred_t *, caller_context_t *, extern int gfs_lookup_dot(vnode_t **, vnode_t *, vnode_t *, const char *); extern int gfs_vop_readdir(struct vop_readdir_args *); -extern int gfs_vop_inactive(struct vop_inactive_args *); +extern int gfs_vop_reclaim(struct vop_reclaim_args *); #ifdef __cplusplus |
