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Commit 2647ba38 authored by Alex Elder's avatar Alex Elder
Browse files

rbd: move call osd op setup into rbd_osd_req_op_create() 



Move the initialization of the CEPH_OSD_OP_CALL operation into
rbd_osd_req_op_create().

Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarJosh Durgin <josh.durgin@inktank.com>
parent 8d23bf29

drivers/block/rbd.c

+30 −18
Original line number Diff line number Diff line
@@ -52,8 +52,10 @@ 
#define	SECTOR_SHIFT	9

#define	SECTOR_SIZE	(1ULL << SECTOR_SHIFT)



/* It might be useful to have this defined elsewhere too */

/* It might be useful to have these defined elsewhere */



#define	U8_MAX	((u8)	(~0U))

#define	U16_MAX	((u16)	(~0U))

#define	U32_MAX	((u32)	(~0U))

#define	U64_MAX	((u64)	(~0ULL))
@@ -1047,6 +1049,7 @@ struct ceph_osd_req_op *rbd_osd_req_op_create(u16 opcode, ...) 
{

	struct ceph_osd_req_op *op;

	va_list args;

	size_t size;



	op = kzalloc(sizeof (*op), GFP_NOIO);

	if (!op)
@@ -1063,6 +1066,27 @@ struct ceph_osd_req_op *rbd_osd_req_op_create(u16 opcode, ...) 
		if (opcode == CEPH_OSD_OP_WRITE)

			op->payload_len = op->extent.length;

		break;

	case CEPH_OSD_OP_CALL:

		/* rbd_osd_req_op_create(CALL, class, method, data, datalen) */

		op->cls.class_name = va_arg(args, char *);

		size = strlen(op->cls.class_name);

		rbd_assert(size <= (size_t) U8_MAX);

		op->cls.class_len = size;

		op->payload_len = size;



		op->cls.method_name = va_arg(args, char *);

		size = strlen(op->cls.method_name);

		rbd_assert(size <= (size_t) U8_MAX);

		op->cls.method_len = size;

		op->payload_len += size;



		op->cls.argc = 0;

		op->cls.indata = va_arg(args, void *);

		size = va_arg(args, size_t);

		rbd_assert(size <= (size_t) U32_MAX);

		op->cls.indata_len = (u32) size;

		op->payload_len += size;

		break;

	default:

		rbd_warn(NULL, "unsupported opcode %hu\n", opcode);

		kfree(op);
@@ -1510,9 +1534,6 @@ static int rbd_req_sync_exec(struct rbd_device *rbd_dev, 
			     u64 *ver)

{

	struct ceph_osd_req_op *op;

	int class_name_len = strlen(class_name);

	int method_name_len = strlen(method_name);

	int payload_size;

	int ret;



	/*
@@ -1523,25 +1544,16 @@ static int rbd_req_sync_exec(struct rbd_device *rbd_dev, 
	 * the perspective of the server side) in the OSD request

	 * operation.

	 */

	payload_size = class_name_len + method_name_len + outbound_size;

	op = rbd_create_rw_op(CEPH_OSD_OP_CALL, 0, 0);

	op = rbd_osd_req_op_create(CEPH_OSD_OP_CALL, class_name,

					method_name, outbound, outbound_size);

	if (!op)

		return -ENOMEM;

	op->payload_len = payload_size;



	op->cls.class_name = class_name;

	op->cls.class_len = (__u8) class_name_len;

	op->cls.method_name = method_name;

	op->cls.method_len = (__u8) method_name_len;

	op->cls.argc = 0;

	op->cls.indata = outbound;

	op->cls.indata_len = outbound_size;



	ret = rbd_req_sync_op(rbd_dev, CEPH_OSD_FLAG_READ, op,

			       object_name, 0, inbound_size, inbound,

			       NULL, ver);



	rbd_destroy_op(op);

	rbd_osd_req_op_destroy(op);



	dout("cls_exec returned %d\n", ret);

	return ret;