C++ (Cpp) txg_list_add Examples

Example #1

File: vdev.c Project: unofficial-opensource-apple/zfs

/*
 * Transfer top-level vdev state from svd to tvd.
 */
static void
vdev_top_transfer(vdev_t *svd, vdev_t *tvd)
{
	spa_t *spa = svd->vdev_spa;
	metaslab_t *msp;
	vdev_t *vd;
	int t;

	ASSERT(tvd == tvd->vdev_top);

	tvd->vdev_ms_array = svd->vdev_ms_array;
	tvd->vdev_ms_shift = svd->vdev_ms_shift;
	tvd->vdev_ms_count = svd->vdev_ms_count;

	svd->vdev_ms_array = 0;
	svd->vdev_ms_shift = 0;
	svd->vdev_ms_count = 0;

	tvd->vdev_mg = svd->vdev_mg;
	tvd->vdev_ms = svd->vdev_ms;

	svd->vdev_mg = NULL;
	svd->vdev_ms = NULL;

	if (tvd->vdev_mg != NULL)
		tvd->vdev_mg->mg_vd = tvd;

	tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc;
	tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space;
	tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace;

	svd->vdev_stat.vs_alloc = 0;
	svd->vdev_stat.vs_space = 0;
	svd->vdev_stat.vs_dspace = 0;

	for (t = 0; t < TXG_SIZE; t++) {
		while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL)
			(void) txg_list_add(&tvd->vdev_ms_list, msp, t);
		while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL)
			(void) txg_list_add(&tvd->vdev_dtl_list, vd, t);
		if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t))
			(void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t);
	}

	if (list_link_active(&svd->vdev_dirty_node)) {
		vdev_config_clean(svd);
		vdev_config_dirty(tvd);
	}

	tvd->vdev_reopen_wanted = svd->vdev_reopen_wanted;
	svd->vdev_reopen_wanted = 0;

	tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio;
	svd->vdev_deflate_ratio = 0;
}

Example #2

File: dsl_synctask.c Project: harshada/zfs

void
dsl_sync_task_group_nowait(dsl_sync_task_group_t *dstg, dmu_tx_t *tx)
{
	uint64_t txg;

	dstg->dstg_nowaiter = B_TRUE;
	txg = dmu_tx_get_txg(tx);
	VERIFY(0 == txg_list_add(&dstg->dstg_pool->dp_sync_tasks, dstg, txg));
}

Example #3

File: dsl_dir.c Project: ChristosKa/freebsd

void
dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx)
{
	dsl_pool_t *dp = dd->dd_pool;

	ASSERT(dd->dd_phys);

	if (txg_list_add(&dp->dp_dirty_dirs, dd, tx->tx_txg)) {
		/* up the hold count until we can be written out */
		dmu_buf_add_ref(dd->dd_dbuf, dd);
	}
}

Example #4

File: dsl_synctask.c Project: harshada/zfs

int
dsl_sync_task_group_wait(dsl_sync_task_group_t *dstg)
{
	dmu_tx_t *tx;
	uint64_t txg;
	dsl_sync_task_t *dst;

top:
	tx = dmu_tx_create_dd(dstg->dstg_pool->dp_mos_dir);
	VERIFY(0 == dmu_tx_assign(tx, TXG_WAIT));

	txg = dmu_tx_get_txg(tx);

	/* Do a preliminary error check. */
	dstg->dstg_err = 0;
	rw_enter(&dstg->dstg_pool->dp_config_rwlock, RW_READER);
	for (dst = list_head(&dstg->dstg_tasks); dst;
	    dst = list_next(&dstg->dstg_tasks, dst)) {
#ifdef ZFS_DEBUG
		/*
		 * Only check half the time, otherwise, the sync-context
		 * check will almost never fail.
		 */
		if (spa_get_random(2) == 0)
			continue;
#endif
		dst->dst_err =
		    dst->dst_checkfunc(dst->dst_arg1, dst->dst_arg2, tx);
		if (dst->dst_err)
			dstg->dstg_err = dst->dst_err;
	}
	rw_exit(&dstg->dstg_pool->dp_config_rwlock);

	if (dstg->dstg_err) {
		dmu_tx_commit(tx);
		return (dstg->dstg_err);
	}

	VERIFY(0 == txg_list_add(&dstg->dstg_pool->dp_sync_tasks, dstg, txg));

	dmu_tx_commit(tx);

	txg_wait_synced(dstg->dstg_pool, txg);

	if (dstg->dstg_err == EAGAIN)
		goto top;

	return (dstg->dstg_err);
}