/* ARGSUSED */
static void
ready(zio_t *zio, arc_buf_t *abuf, void *arg)
{
objset_impl_t *os = arg;
blkptr_t *bp = os->os_rootbp;
dnode_phys_t *dnp = &os->os_phys->os_meta_dnode;
int i;
ASSERT(bp == zio->io_bp);
/*
* Update rootbp fill count.
*/
bp->blk_fill = 1; /* count the meta-dnode */
for (i = 0; i < dnp->dn_nblkptr; i++)
bp->blk_fill += dnp->dn_blkptr[i].blk_fill;
BP_SET_TYPE(bp, DMU_OT_OBJSET);
BP_SET_LEVEL(bp, 0);
/* We must do this after we've set the bp's type and level */
if (!DVA_EQUAL(BP_IDENTITY(bp),
BP_IDENTITY(&zio->io_bp_orig))) {
if (zio->io_bp_orig.blk_birth == os->os_synctx->tx_txg)
(void) dsl_dataset_block_kill(os->os_dsl_dataset,
&zio->io_bp_orig, NULL, os->os_synctx);
dsl_dataset_block_born(os->os_dsl_dataset, bp, os->os_synctx);
}
}
static void
free_blocks(dnode_t *dn, blkptr_t *bp, int num, dmu_tx_t *tx)
{
dsl_dataset_t *ds = dn->dn_objset->os_dsl_dataset;
uint64_t bytesfreed = 0;
int i;
dprintf("ds=%p obj=%llx num=%d\n", ds, dn->dn_object, num);
for (i = 0; i < num; i++, bp++) {
uint64_t lsize, lvl;
dmu_object_type_t type;
if (BP_IS_HOLE(bp))
continue;
bytesfreed += dsl_dataset_block_kill(ds, bp, tx, B_FALSE);
ASSERT3U(bytesfreed, <=, DN_USED_BYTES(dn->dn_phys));
/*
* Save some useful information on the holes being
* punched, including logical size, type, and indirection
* level. Retaining birth time enables detection of when
* holes are punched for reducing the number of free
* records transmitted during a zfs send.
*/
lsize = BP_GET_LSIZE(bp);
type = BP_GET_TYPE(bp);
lvl = BP_GET_LEVEL(bp);
bzero(bp, sizeof (blkptr_t));
if (spa_feature_is_active(dn->dn_objset->os_spa,
SPA_FEATURE_HOLE_BIRTH)) {
BP_SET_LSIZE(bp, lsize);
BP_SET_TYPE(bp, type);
BP_SET_LEVEL(bp, lvl);
BP_SET_BIRTH(bp, dmu_tx_get_txg(tx), 0);
}
}
dnode_diduse_space(dn, -bytesfreed);
}