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authorIlya Dryomov <idryomov@gmail.com>2017-01-25 18:16:22 +0100
committerIlya Dryomov <idryomov@gmail.com>2017-02-20 12:16:14 +0100
commit5bc3fb177548503735bcc35fe98475d883740ecb (patch)
treef48c80317a9fc3c82f436bee3cddb75bf8750025 /drivers/block
parent03acf083355ffeb89b9269d205004d6d888fff99 (diff)
downloadlinux-5bc3fb177548503735bcc35fe98475d883740ecb.tar.bz2
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>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index e2ffd4fffd06..55e30db0576d 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -971,6 +971,14 @@ static bool rbd_dev_ondisk_valid(struct rbd_image_header_ondisk *ondisk)
}
/*
+ * 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;
@@ -1275,14 +1283,6 @@ static u64 rbd_segment_length(struct rbd_device *rbd_dev,
}
/*
- * 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) {