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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: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
This commit is contained in:
Ilya Dryomov 2017-01-25 18:16:22 +01:00
parent 03acf08335
commit 5bc3fb1775
1 changed files with 12 additions and 12 deletions
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24
drivers/block/rbd.c
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@ -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) {