Esempi in C++ (Cpp) per dsl_dataset_get_user_ptr

Esempio n. 1

File: dmu_objset.c Progetto: roddi/maczfs-10a286

static int
dmu_objset_open_ds_os(dsl_dataset_t *ds, objset_t *os, dmu_objset_type_t type)
{
	objset_impl_t *osi;

	mutex_enter(&ds->ds_opening_lock);
	osi = dsl_dataset_get_user_ptr(ds);
	if (osi == NULL) {
		int err;

		err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
		    ds, &ds->ds_phys->ds_bp, &osi);
		if (err) {
			mutex_exit(&ds->ds_opening_lock);
			return (err);
		}
	}
	mutex_exit(&ds->ds_opening_lock);

	os->os = osi;
	os->os_mode = DS_MODE_NOHOLD;

	if (type != DMU_OST_ANY && type != os->os->os_phys->os_type)
		return (EINVAL);
	return (0);
}

Esempio n. 2

File: dmu_objset.c Progetto: harshada/zfs

/* ARGSUSED */
int
dmu_objset_prefetch(char *name, void *arg)
{
	dsl_dataset_t *ds;

	if (dsl_dataset_hold(name, FTAG, &ds))
		return (0);

	if (!BP_IS_HOLE(&ds->ds_phys->ds_bp)) {
		mutex_enter(&ds->ds_opening_lock);
		if (!dsl_dataset_get_user_ptr(ds)) {
			uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH;
			zbookmark_t zb;

			zb.zb_objset = ds->ds_object;
			zb.zb_object = 0;
			zb.zb_level = -1;
			zb.zb_blkid = 0;

			(void) arc_read_nolock(NULL, dsl_dataset_get_spa(ds),
			    &ds->ds_phys->ds_bp, NULL, NULL,
			    ZIO_PRIORITY_ASYNC_READ,
			    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE,
			    &aflags, &zb);
		}
		mutex_exit(&ds->ds_opening_lock);
	}

	dsl_dataset_rele(ds, FTAG);
	return (0);
}

Esempio n. 3

File: dmu_objset.c Progetto: unofficial-opensource-apple/zfs

/* called from zpl */
int
dmu_objset_open(const char *name, dmu_objset_type_t type, int mode,
    objset_t **osp)
{
	dsl_dataset_t *ds;
	int err;
	objset_t *os;
	objset_impl_t *osi;

	os = kmem_alloc(sizeof (objset_t), KM_SLEEP);
	err = dsl_dataset_open(name, mode, os, &ds);
	if (err) {
		kmem_free(os, sizeof (objset_t));
		return (err);
	}

	osi = dsl_dataset_get_user_ptr(ds);
	if (osi == NULL) {
		err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
		    ds, &ds->ds_phys->ds_bp, &osi);
		if (err) {
			dsl_dataset_close(ds, mode, os);
			kmem_free(os, sizeof (objset_t));
			return (err);
		}
	}

	os->os = osi;
	os->os_mode = mode;

	if (type != DMU_OST_ANY && type != os->os->os_phys->os_type) {
		dmu_objset_close(os);
		return (EINVAL);
	}
	*osp = os;
	return (0);
}