Commit bf2d02b6 authored by Maciej Szwed's avatar Maciej Szwed Committed by Jim Harris
Browse files

blob: add _spdk_bs_allocate_cluster function 



Signed-off-by: default avatarMaciej Szwed <maciej.szwed@intel.com>
Change-Id: I35779dc547e0c084086ec6d9bf44f86850cb7f05
Reviewed-on: https://review.gerrithub.io/393780


Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent bd4c63b3

lib/blob/blobstore.c

+19 −4
Original line number Diff line number Diff line
@@ -70,6 +70,24 @@ _spdk_bs_claim_cluster(struct spdk_blob_store *bs, uint32_t cluster_num) 
	bs->num_free_clusters--;

}



static int

_spdk_bs_allocate_cluster(struct spdk_blob_data *blob, uint32_t cluster_num,

			  uint64_t *lowest_free_cluster)

{

	*lowest_free_cluster = spdk_bit_array_find_first_clear(blob->bs->used_clusters,

			       *lowest_free_cluster);

	if (*lowest_free_cluster >= blob->bs->total_clusters) {

		/* No more free clusters. Cannot satisfy the request */

		return -ENOSPC;

	}



	SPDK_DEBUGLOG(SPDK_LOG_BLOB, "Claiming cluster %lu for blob %lu\n", *lowest_free_cluster, blob->id);

	_spdk_bs_claim_cluster(blob->bs, *lowest_free_cluster);

	blob->active.clusters[cluster_num] = _spdk_bs_cluster_to_lba(blob->bs, *lowest_free_cluster);



	return 0;

}



static void

_spdk_bs_release_cluster(struct spdk_blob_store *bs, uint32_t cluster_num)

{
@@ -1068,10 +1086,7 @@ _spdk_resize_blob(struct spdk_blob_data *blob, uint64_t sz) 
	if (spdk_blob_is_thin_provisioned(blob) == false) {

		lfc = 0;

		for (i = num_clusters; i < sz; i++) {

			lfc = spdk_bit_array_find_first_clear(bs->used_clusters, lfc);

			SPDK_DEBUGLOG(SPDK_LOG_BLOB, "Claiming cluster %lu for blob %lu\n", lfc, blob->id);

			_spdk_bs_claim_cluster(bs, lfc);

			blob->active.clusters[i] = _spdk_bs_cluster_to_lba(bs, lfc);

			_spdk_bs_allocate_cluster(blob, i, &lfc);

			lfc++;

		}

	}