static void
zfs_znode_sa_init(zfs_sb_t *zsb, znode_t *zp,
dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl)
{
ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zsb, zp->z_id)));
mutex_enter(&zp->z_lock);
ASSERT(zp->z_sa_hdl == NULL);
ASSERT(zp->z_acl_cached == NULL);
if (sa_hdl == NULL) {
VERIFY(0 == sa_handle_get_from_db(zsb->z_os, db, zp,
SA_HDL_SHARED, &zp->z_sa_hdl));
} else {
zp->z_sa_hdl = sa_hdl;
sa_set_userp(sa_hdl, zp);
}
zp->z_is_sa = (obj_type == DMU_OT_SA) ? B_TRUE : B_FALSE;
mutex_exit(&zp->z_lock);
}
static void
zfs_znode_move_impl(znode_t *ozp, znode_t *nzp)
{
vnode_t *vp;
/* Copy fields. */
nzp->z_zfsvfs = ozp->z_zfsvfs;
/* Swap vnodes. */
vp = nzp->z_vnode;
nzp->z_vnode = ozp->z_vnode;
ozp->z_vnode = vp; /* let destructor free the overwritten vnode */
ZTOV(ozp)->v_data = ozp;
ZTOV(nzp)->v_data = nzp;
nzp->z_id = ozp->z_id;
ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */
ASSERT(avl_numnodes(&ozp->z_range_avl) == 0);
nzp->z_unlinked = ozp->z_unlinked;
nzp->z_atime_dirty = ozp->z_atime_dirty;
nzp->z_zn_prefetch = ozp->z_zn_prefetch;
nzp->z_blksz = ozp->z_blksz;
nzp->z_seq = ozp->z_seq;
nzp->z_mapcnt = ozp->z_mapcnt;
nzp->z_gen = ozp->z_gen;
nzp->z_sync_cnt = ozp->z_sync_cnt;
nzp->z_is_sa = ozp->z_is_sa;
nzp->z_sa_hdl = ozp->z_sa_hdl;
bcopy(ozp->z_atime, nzp->z_atime, sizeof (uint64_t) * 2);
nzp->z_links = ozp->z_links;
nzp->z_size = ozp->z_size;
nzp->z_pflags = ozp->z_pflags;
nzp->z_uid = ozp->z_uid;
nzp->z_gid = ozp->z_gid;
nzp->z_mode = ozp->z_mode;
/*
* Since this is just an idle znode and kmem is already dealing with
* memory pressure, release any cached ACL.
*/
if (ozp->z_acl_cached) {
zfs_acl_free(ozp->z_acl_cached);
ozp->z_acl_cached = NULL;
}
sa_set_userp(nzp->z_sa_hdl, nzp);
/*
* Invalidate the original znode by clearing fields that provide a
* pointer back to the znode. Set the low bit of the vfs pointer to
* ensure that zfs_znode_move() recognizes the znode as invalid in any
* subsequent callback.
*/
ozp->z_sa_hdl = NULL;
// POINTER_INVALIDATE(&ozp->z_zfsvfs);
/*
* Mark the znode.
*/
nzp->z_moved = 1;
ozp->z_moved = (uint8_t)-1;
}
