diff options
| -rw-r--r-- | drivers/block/rbd.c | 81 |
1 files changed, 32 insertions, 49 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 047e877cacb8..2c596f7498bd 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4242,63 +4242,46 @@ static void rbd_free_disk(struct rbd_device *rbd_dev) } static int rbd_obj_read_sync(struct rbd_device *rbd_dev, - const char *object_name, - u64 offset, u64 length, void *buf) + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + void *buf, int buf_len) { - struct rbd_obj_request *obj_request; - struct page **pages = NULL; - u32 page_count; - size_t size; + struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc; + struct ceph_osd_request *req; + struct page **pages; + int num_pages = calc_pages_for(0, buf_len); int ret; - page_count = (u32) calc_pages_for(offset, length); - pages = ceph_alloc_page_vector(page_count, GFP_KERNEL); - if (IS_ERR(pages)) - return PTR_ERR(pages); - - ret = -ENOMEM; - obj_request = rbd_obj_request_create(object_name, offset, length, - OBJ_REQUEST_PAGES); - if (!obj_request) - goto out; - - obj_request->pages = pages; - obj_request->page_count = page_count; - - obj_request->osd_req = rbd_osd_req_create(rbd_dev, OBJ_OP_READ, 1, - obj_request); - if (!obj_request->osd_req) - goto out; + req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_KERNEL); + if (!req) + return -ENOMEM; - osd_req_op_extent_init(obj_request->osd_req, 0, CEPH_OSD_OP_READ, - offset, length, 0, 0); - osd_req_op_extent_osd_data_pages(obj_request->osd_req, 0, - obj_request->pages, - obj_request->length, - obj_request->offset & ~PAGE_MASK, - false, false); + ceph_oid_copy(&req->r_base_oid, oid); + ceph_oloc_copy(&req->r_base_oloc, oloc); + req->r_flags = CEPH_OSD_FLAG_READ; - rbd_obj_request_submit(obj_request); - ret = rbd_obj_request_wait(obj_request); + ret = ceph_osdc_alloc_messages(req, GFP_KERNEL); if (ret) - goto out; + goto out_req; - ret = obj_request->result; - if (ret < 0) - goto out; + pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL); + if (IS_ERR(pages)) { + ret = PTR_ERR(pages); + goto out_req; + } - rbd_assert(obj_request->xferred <= (u64) SIZE_MAX); - size = (size_t) obj_request->xferred; - ceph_copy_from_page_vector(pages, buf, 0, size); - rbd_assert(size <= (size_t)INT_MAX); - ret = (int)size; -out: - if (obj_request) - rbd_obj_request_put(obj_request); - else - ceph_release_page_vector(pages, page_count); + osd_req_op_extent_init(req, 0, CEPH_OSD_OP_READ, 0, buf_len, 0, 0); + osd_req_op_extent_osd_data_pages(req, 0, pages, buf_len, 0, false, + true); + + ceph_osdc_start_request(osdc, req, false); + ret = ceph_osdc_wait_request(osdc, req); + if (ret >= 0) + ceph_copy_from_page_vector(pages, buf, 0, ret); +out_req: + ceph_osdc_put_request(req); return ret; } @@ -4334,8 +4317,8 @@ static int rbd_dev_v1_header_info(struct rbd_device *rbd_dev) if (!ondisk) return -ENOMEM; - ret = rbd_obj_read_sync(rbd_dev, rbd_dev->header_oid.name, - 0, size, ondisk); + ret = rbd_obj_read_sync(rbd_dev, &rbd_dev->header_oid, + &rbd_dev->header_oloc, ondisk, size); if (ret < 0) goto out; if ((size_t)ret < size) { |