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libceph: change ceph_osdc_call() to take page vector for response

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This will be used for loading object map.  rbd_obj_read_sync() isn't
suitable because object map must be accessed through class methods.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
This commit is contained in:
Ilya Dryomov 2019-06-14 18:16:51 +02:00
parent ef83171b49
commit 68ada915ee
4 changed files with 11 additions and 11 deletions
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8
drivers/block/rbd.c
View File

@ -4076,7 +4076,7 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
ret = ceph_osdc_call(osdc, oid, oloc, RBD_DRV_NAME, method_name,
CEPH_OSD_FLAG_READ, req_page, outbound_size,
reply_page, &inbound_size);
&reply_page, &inbound_size);
if (!ret) {
memcpy(inbound, page_address(reply_page), inbound_size);
ret = inbound_size;
@ -5102,7 +5102,7 @@ static int __get_parent_info(struct rbd_device *rbd_dev,
ret = ceph_osdc_call(osdc, &rbd_dev->header_oid, &rbd_dev->header_oloc,
"rbd", "parent_get", CEPH_OSD_FLAG_READ,
req_page, sizeof(u64), reply_page, &reply_len);
req_page, sizeof(u64), &reply_page, &reply_len);
if (ret)
return ret == -EOPNOTSUPP ? 1 : ret;
@ -5114,7 +5114,7 @@ static int __get_parent_info(struct rbd_device *rbd_dev,
ret = ceph_osdc_call(osdc, &rbd_dev->header_oid, &rbd_dev->header_oloc,
"rbd", "parent_overlap_get", CEPH_OSD_FLAG_READ,
req_page, sizeof(u64), reply_page, &reply_len);
req_page, sizeof(u64), &reply_page, &reply_len);
if (ret)
return ret;
@ -5145,7 +5145,7 @@ static int __get_parent_info_legacy(struct rbd_device *rbd_dev,
ret = ceph_osdc_call(osdc, &rbd_dev->header_oid, &rbd_dev->header_oloc,
"rbd", "get_parent", CEPH_OSD_FLAG_READ,
req_page, sizeof(u64), reply_page, &reply_len);
req_page, sizeof(u64), &reply_page, &reply_len);
if (ret)
return ret;

2
include/linux/ceph/osd_client.h
View File

@ -497,7 +497,7 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
const char *class, const char *method,
unsigned int flags,
struct page *req_page, size_t req_len,
struct page *resp_page, size_t *resp_len);
struct page **resp_pages, size_t *resp_len);
extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
struct ceph_vino vino,

2
net/ceph/cls_lock_client.c
View File

@ -363,7 +363,7 @@ int ceph_cls_lock_info(struct ceph_osd_client *osdc,
dout("%s lock_name %s\n", __func__, lock_name);
ret = ceph_osdc_call(osdc, oid, oloc, "lock", "get_info",
CEPH_OSD_FLAG_READ, get_info_op_page,
get_info_op_buf_size, reply_page, &reply_len);
get_info_op_buf_size, &reply_page, &reply_len);
dout("%s: status %d\n", __func__, ret);
if (ret >= 0) {

10
net/ceph/osd_client.c
View File

@ -5050,12 +5050,12 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
const char *class, const char *method,
unsigned int flags,
struct page *req_page, size_t req_len,
struct page *resp_page, size_t *resp_len)
struct page **resp_pages, size_t *resp_len)
{
struct ceph_osd_request *req;
int ret;
if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE))
if (req_len > PAGE_SIZE)
return -E2BIG;
req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO);
@ -5073,8 +5073,8 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
if (req_page)
osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len,
0, false, false);
if (resp_page)
osd_req_op_cls_response_data_pages(req, 0, &resp_page,
if (resp_pages)
osd_req_op_cls_response_data_pages(req, 0, resp_pages,
*resp_len, 0, false, false);
ret = ceph_osdc_alloc_messages(req, GFP_NOIO);
@ -5085,7 +5085,7 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
ret = ceph_osdc_wait_request(osdc, req);
if (ret >= 0) {
ret = req->r_ops[0].rval;
if (resp_page)
if (resp_pages)
*resp_len = req->r_ops[0].outdata_len;
}