Differential D28677 Diff 83996 sys/contrib/openzfs/module/zfs/dsl_dataset.c

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Show First 20 Lines • Show All 2,316 Lines • ▼ Show 20 Lines	get_clones_stat_impl(dsl_dataset_t ds, nvlist_t val)
zap_cursor_fini(&zc);		zap_cursor_fini(&zc);
return (0);		return (0);
}		}

void		void
get_clones_stat(dsl_dataset_t ds, nvlist_t nv)		get_clones_stat(dsl_dataset_t ds, nvlist_t nv)
{		{
nvlist_t *propval = fnvlist_alloc();		nvlist_t *propval = fnvlist_alloc();
nvlist_t *val;		nvlist_t *val = fnvlist_alloc();

/*
* We use nvlist_alloc() instead of fnvlist_alloc() because the
* latter would allocate the list with NV_UNIQUE_NAME flag.
* As a result, every time a clone name is appended to the list
* it would be (linearly) searched for a duplicate name.
* We already know that all clone names must be unique and we
* want avoid the quadratic complexity of double-checking that
* because we can have a large number of clones.
*/
VERIFY0(nvlist_alloc(&val, 0, KM_SLEEP));

if (get_clones_stat_impl(ds, val) == 0) {		if (get_clones_stat_impl(ds, val) == 0) {
fnvlist_add_nvlist(propval, ZPROP_VALUE, val);		fnvlist_add_nvlist(propval, ZPROP_VALUE, val);
fnvlist_add_nvlist(nv, zfs_prop_to_name(ZFS_PROP_CLONES),		fnvlist_add_nvlist(nv, zfs_prop_to_name(ZFS_PROP_CLONES),
propval);		propval);
}		}

nvlist_free(val);		nvlist_free(val);
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