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rbd: set offset and length outside of rbd_obj_request_create() 

The allocation doesn't depend on offset and length.  Both offset and
length can be changed after obj_request is allocated, too.

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 7e97332ea9
commit 67e2b65274
1 changed files with 11 additions and 15 deletions
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26
drivers/block/rbd.c
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@ -1631,7 +1631,9 @@ static void rbd_obj_request_submit(struct rbd_obj_request *obj_request)
{
struct ceph_osd_request *osd_req = obj_request->osd_req;
dout("%s %p osd_req %p\n", __func__, obj_request, osd_req);
dout("%s %p \"%s\" %llu~%llu osd_req %p\n", __func__,
obj_request, obj_request->object_name, obj_request->offset,
obj_request->length, osd_req);
if (obj_request_img_data_test(obj_request)) {
WARN_ON(obj_request->callback != rbd_img_obj_callback);
rbd_img_request_get(obj_request->img_request);
@ -2073,7 +2075,6 @@ static void rbd_osd_req_destroy(struct ceph_osd_request *osd_req)
/* object_name is assumed to be a non-null pointer and NUL-terminated */
static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
u64 offset, u64 length,
enum obj_request_type type)
{
struct rbd_obj_request *obj_request;
@ -2094,18 +2095,13 @@ static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
}
obj_request->object_name = memcpy(name, object_name, size);
obj_request->offset = offset;
obj_request->length = length;
obj_request->flags = 0;
obj_request->which = BAD_WHICH;
obj_request->type = type;
INIT_LIST_HEAD(&obj_request->links);
init_completion(&obj_request->completion);
kref_init(&obj_request->kref);
dout("%s: \"%s\" %llu/%llu %d -> obj %p\n", __func__, object_name,
offset, length, (int)type, obj_request);
dout("%s %p\n", __func__, obj_request);
return obj_request;
}
@ -2517,21 +2513,21 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
while (resid) {
struct ceph_osd_request *osd_req;
const char *object_name;
u64 offset;
u64 length;
u64 offset = rbd_segment_offset(rbd_dev, img_offset);
u64 length = rbd_segment_length(rbd_dev, img_offset, resid);
object_name = rbd_segment_name(rbd_dev, img_offset);
if (!object_name)
goto out_unwind;
offset = rbd_segment_offset(rbd_dev, img_offset);
length = rbd_segment_length(rbd_dev, img_offset, resid);
obj_request = rbd_obj_request_create(object_name,
offset, length, type);
obj_request = rbd_obj_request_create(object_name, type);
/* object request has its own copy of the object name */
rbd_segment_name_free(object_name);
if (!obj_request)
goto out_unwind;
obj_request->offset = offset;
obj_request->length = length;
/*
* set obj_request->img_request before creating the
* osd_request so that it gets the right snapc
@ -2870,7 +2866,7 @@ static int rbd_img_obj_exists_submit(struct rbd_obj_request *obj_request)
size_t size;
int ret;
stat_request = rbd_obj_request_create(obj_request->object_name, 0, 0,
stat_request = rbd_obj_request_create(obj_request->object_name,
OBJ_REQUEST_PAGES);
if (!stat_request)
return -ENOMEM;