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Commit 5bc3fb17 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

rbd: use rbd_obj_bytes() more 



Returning u64 doesn't make sense: max header->obj_order is 25 and
ceph_file_layout::object_size is u32.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
Reviewed-by: default avatarJason Dillaman <dillaman@redhat.com>
parent 03acf083

drivers/block/rbd.c

+12 −12
Original line number Diff line number Diff line
@@ -970,6 +970,14 @@ static bool rbd_dev_ondisk_valid(struct rbd_image_header_ondisk *ondisk) 
	return true;

}



/*

 * returns the size of an object in the image

 */

static u32 rbd_obj_bytes(struct rbd_image_header *header)

{

	return 1U << header->obj_order;

}



/*

 * Fill an rbd image header with information from the given format 1

 * on-disk header.
@@ -1255,7 +1263,7 @@ static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset) 


static u64 rbd_segment_offset(struct rbd_device *rbd_dev, u64 offset)

{

	u64 segment_size = (u64) 1 << rbd_dev->header.obj_order;

	u64 segment_size = rbd_obj_bytes(&rbd_dev->header);



	return offset & (segment_size - 1);

}
@@ -1263,7 +1271,7 @@ static u64 rbd_segment_offset(struct rbd_device *rbd_dev, u64 offset) 
static u64 rbd_segment_length(struct rbd_device *rbd_dev,

				u64 offset, u64 length)

{

	u64 segment_size = (u64) 1 << rbd_dev->header.obj_order;

	u64 segment_size = rbd_obj_bytes(&rbd_dev->header);



	offset &= segment_size - 1;
@@ -1274,14 +1282,6 @@ static u64 rbd_segment_length(struct rbd_device *rbd_dev, 
	return length;

}



/*

 * returns the size of an object in the image

 */

static u64 rbd_obj_bytes(struct rbd_image_header *header)

{

	return 1 << header->obj_order;

}



/*

 * bio helpers

 */
@@ -2721,7 +2721,7 @@ static int rbd_img_obj_parent_read_full(struct rbd_obj_request *obj_request) 
	 * child image to which the original request was to be sent.

	 */

	img_offset = obj_request->img_offset - obj_request->offset;

	length = (u64)1 << rbd_dev->header.obj_order;

	length = rbd_obj_bytes(&rbd_dev->header);



	/*

	 * There is no defined parent data beyond the parent
@@ -5130,7 +5130,7 @@ static int rbd_dev_v2_striping_info(struct rbd_device *rbd_dev) 
	 * out, and only fail if the image has non-default values.

	 */

	ret = -EINVAL;

	obj_size = (u64)1 << rbd_dev->header.obj_order;

	obj_size = rbd_obj_bytes(&rbd_dev->header);

	p = &striping_info_buf;

	stripe_unit = ceph_decode_64(&p);

	if (stripe_unit != obj_size) {