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Commit e28eded5 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

rbd: factor out __rbd_osd_req_create() 



Allow passing a custom snapshot context: NULL for read and an empty
snapshot context for deep-copyup.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 356889c4

drivers/block/rbd.c

+12 −7
Original line number Diff line number Diff line
@@ -1486,18 +1486,16 @@ static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request) 
}



static struct ceph_osd_request *

rbd_osd_req_create(struct rbd_obj_request *obj_req, unsigned int num_ops)

__rbd_osd_req_create(struct rbd_obj_request *obj_req,

		     struct ceph_snap_context *snapc, unsigned int num_ops)

{

	struct rbd_img_request *img_req = obj_req->img_request;

	struct rbd_device *rbd_dev = img_req->rbd_dev;

	struct rbd_device *rbd_dev = obj_req->img_request->rbd_dev;

	struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;

	struct ceph_osd_request *req;

	const char *name_format = rbd_dev->image_format == 1 ?

				      RBD_V1_DATA_FORMAT : RBD_V2_DATA_FORMAT;



	req = ceph_osdc_alloc_request(osdc,

			(rbd_img_is_write(img_req) ? img_req->snapc : NULL),

			num_ops, false, GFP_NOIO);

	req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false, GFP_NOIO);

	if (!req)

		return NULL;
@@ -1522,6 +1520,13 @@ rbd_osd_req_create(struct rbd_obj_request *obj_req, unsigned int num_ops) 
	return NULL;

}



static struct ceph_osd_request *

rbd_osd_req_create(struct rbd_obj_request *obj_req, unsigned int num_ops)

{

	return __rbd_osd_req_create(obj_req, obj_req->img_request->snapc,

				    num_ops);

}



static void rbd_osd_req_destroy(struct ceph_osd_request *osd_req)

{

	ceph_osdc_put_request(osd_req);
@@ -1769,7 +1774,7 @@ static void rbd_osd_req_setup_data(struct rbd_obj_request *obj_req, u32 which) 


static int rbd_obj_setup_read(struct rbd_obj_request *obj_req)

{

	obj_req->osd_req = rbd_osd_req_create(obj_req, 1);

	obj_req->osd_req = __rbd_osd_req_create(obj_req, NULL, 1);

	if (!obj_req->osd_req)

		return -ENOMEM;