engines/io_uring: fdp allocate ruhs buffer as per actual

Use calloc instead of scalloc as ruhs buffer allocation is temporary.
Remove the restriction on maximum number of ruhs, fetch and fill the
ruhs buffer as requested by fdp backend.

Signed-off-by: Ankit Kumar <[email protected]>
Signed-off-by: Vincent Fu <[email protected]>

engines/io_uring.c

@@ -1533,10 +1533,12 @@ static int fio_ioring_cmd_fetch_ruhs(struct thread_data *td, struct fio_file *f,
 				     struct fio_ruhs_info *fruhs_info)
 {
 	struct nvme_fdp_ruh_status *ruhs;
-	int bytes, ret, i;
+	int bytes, nr_ruhs, ret, i;
 
-	bytes = sizeof(*ruhs) + FDP_MAX_RUHS * sizeof(struct nvme_fdp_ruh_status_desc);
-	ruhs = scalloc(1, bytes);
+	nr_ruhs = fruhs_info->nr_ruhs;
+	bytes = sizeof(*ruhs) + fruhs_info->nr_ruhs * sizeof(struct nvme_fdp_ruh_status_desc);
+
+	ruhs = calloc(1, bytes);
 	if (!ruhs)
 		return -ENOMEM;
 
@@ -1545,12 +1547,10 @@ static int fio_ioring_cmd_fetch_ruhs(struct thread_data *td, struct fio_file *f,
 		goto free;
 
 	fruhs_info->nr_ruhs = le16_to_cpu(ruhs->nruhsd);
-	if (fruhs_info->nr_ruhs > FDP_MAX_RUHS)
-		fruhs_info->nr_ruhs = FDP_MAX_RUHS;
-	for (i = 0; i < fruhs_info->nr_ruhs; i++)
+	for (i = 0; i < nr_ruhs; i++)
 		fruhs_info->plis[i] = le16_to_cpu(ruhs->ruhss[i].pid);
 free:
-	sfree(ruhs);
+	free(ruhs);
 	return ret;
 }