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rbd: factor out __rbd_osd_req_create() 

Factor OSD request allocation and initialization code out into
__rbd_osd_req_create().

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 18:16:23 +01:00
parent 67e2b65274
commit bc81207ea9
1 changed files with 40 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

103
drivers/block/rbd.c
View File

@ -1952,6 +1952,38 @@ static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request)
osd_req->r_data_offset = obj_request->offset;
}
static struct ceph_osd_request *
__rbd_osd_req_create(struct rbd_device *rbd_dev,
struct ceph_snap_context *snapc,
int num_ops, unsigned int flags,
struct rbd_obj_request *obj_request)
{
struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
struct ceph_osd_request *req;
req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false, GFP_NOIO);
if (!req)
return NULL;
req->r_flags = flags;
req->r_callback = rbd_osd_req_callback;
req->r_priv = obj_request;
req->r_base_oloc.pool = rbd_dev->layout.pool_id;
if (ceph_oid_aprintf(&req->r_base_oid, GFP_NOIO, "%s",
obj_request->object_name))
goto err_req;
if (ceph_osdc_alloc_messages(req, GFP_NOIO))
goto err_req;
return req;
err_req:
ceph_osdc_put_request(req);
return NULL;
}
/*
* Create an osd request. A read request has one osd op (read).
* A write request has either one (watch) or two (hint+write) osd ops.
@ -1965,8 +1997,6 @@ static struct ceph_osd_request *rbd_osd_req_create(
struct rbd_obj_request *obj_request)
{
struct ceph_snap_context *snapc = NULL;
struct ceph_osd_client *osdc;
struct ceph_osd_request *osd_req;
if (obj_request_img_data_test(obj_request) &&
(op_type == OBJ_OP_DISCARD || op_type == OBJ_OP_WRITE)) {
@ -1981,35 +2011,10 @@ static struct ceph_osd_request *rbd_osd_req_create(
rbd_assert(num_ops == 1 || ((op_type == OBJ_OP_WRITE) && num_ops == 2));
/* Allocate and initialize the request, for the num_ops ops */
osdc = &rbd_dev->rbd_client->client->osdc;
osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false,
GFP_NOIO);
if (!osd_req)
goto fail;
if (op_type == OBJ_OP_WRITE || op_type == OBJ_OP_DISCARD)
osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
else
osd_req->r_flags = CEPH_OSD_FLAG_READ;
osd_req->r_callback = rbd_osd_req_callback;
osd_req->r_priv = obj_request;
osd_req->r_base_oloc.pool = rbd_dev->layout.pool_id;
if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s",
obj_request->object_name))
goto fail;
if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO))
goto fail;
return osd_req;
fail:
ceph_osdc_put_request(osd_req);
return NULL;
return __rbd_osd_req_create(rbd_dev, snapc, num_ops,
(op_type == OBJ_OP_WRITE || op_type == OBJ_OP_DISCARD) ?
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK : CEPH_OSD_FLAG_READ,
obj_request);
}
/*
@ -2022,10 +2027,6 @@ static struct ceph_osd_request *
rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
{
struct rbd_img_request *img_request;
struct ceph_snap_context *snapc;
struct rbd_device *rbd_dev;
struct ceph_osd_client *osdc;
struct ceph_osd_request *osd_req;
int num_osd_ops = 3;
rbd_assert(obj_request_img_data_test(obj_request));
@ -2037,36 +2038,12 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
if (img_request_discard_test(img_request))
num_osd_ops = 2;
/* Allocate and initialize the request, for all the ops */
snapc = img_request->snapc;
rbd_dev = img_request->rbd_dev;
osdc = &rbd_dev->rbd_client->client->osdc;
osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops,
false, GFP_NOIO);
if (!osd_req)
goto fail;
osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
osd_req->r_callback = rbd_osd_req_callback;
osd_req->r_priv = obj_request;
osd_req->r_base_oloc.pool = rbd_dev->layout.pool_id;
if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s",
obj_request->object_name))
goto fail;
if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO))
goto fail;
return osd_req;
fail:
ceph_osdc_put_request(osd_req);
return NULL;
return __rbd_osd_req_create(img_request->rbd_dev,
img_request->snapc, num_osd_ops,
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
obj_request);
}
static void rbd_osd_req_destroy(struct ceph_osd_request *osd_req)
{
ceph_osdc_put_request(osd_req);