UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

rbd: factor out __rbd_osd_setup_discard_ops() 

With obj_req->xferred removed, obj_req->ex.oe_off and obj_req->ex.oe_len
can be updated if required for alignment.  Previously the new offset and
length weren't stored anywhere beyond rbd_obj_setup_discard().

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
This commit is contained in:
Ilya Dryomov 2019-05-29 17:31:37 +02:00
parent b5ae8cbc6e
commit 27bbd91162
1 changed files with 27 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/block/rbd.c
View File

@ -1943,12 +1943,27 @@ static u16 truncate_or_zero_opcode(struct rbd_obj_request *obj_req)
CEPH_OSD_OP_ZERO;
}
static void __rbd_osd_setup_discard_ops(struct ceph_osd_request *osd_req,
int which)
{
struct rbd_obj_request *obj_req = osd_req->r_priv;
if (rbd_obj_is_entire(obj_req) && !obj_req->num_img_extents) {
rbd_assert(obj_req->flags & RBD_OBJ_FLAG_DELETION);
osd_req_op_init(osd_req, which, CEPH_OSD_OP_DELETE, 0);
} else {
osd_req_op_extent_init(osd_req, which,
truncate_or_zero_opcode(obj_req),
obj_req->ex.oe_off, obj_req->ex.oe_len,
0, 0);
}
}
static int rbd_obj_setup_discard(struct rbd_obj_request *obj_req)
{
struct rbd_device *rbd_dev = obj_req->img_request->rbd_dev;
struct ceph_osd_request *osd_req;
u64 off = obj_req->ex.oe_off;
u64 next_off = obj_req->ex.oe_off + obj_req->ex.oe_len;
u64 off, next_off;
int ret;
/*
@ -1961,10 +1976,17 @@ static int rbd_obj_setup_discard(struct rbd_obj_request *obj_req)
*/
if (rbd_dev->opts->alloc_size != rbd_dev->layout.object_size ||
!rbd_obj_is_tail(obj_req)) {
off = round_up(off, rbd_dev->opts->alloc_size);
next_off = round_down(next_off, rbd_dev->opts->alloc_size);
off = round_up(obj_req->ex.oe_off, rbd_dev->opts->alloc_size);
next_off = round_down(obj_req->ex.oe_off + obj_req->ex.oe_len,
rbd_dev->opts->alloc_size);
if (off >= next_off)
return 1;
dout("%s %p %llu~%llu -> %llu~%llu\n", __func__,
obj_req, obj_req->ex.oe_off, obj_req->ex.oe_len,
off, next_off - off);
obj_req->ex.oe_off = off;
obj_req->ex.oe_len = next_off - off;
}
/* reverse map the entire object onto the parent */
@ -1979,19 +2001,8 @@ static int rbd_obj_setup_discard(struct rbd_obj_request *obj_req)
if (IS_ERR(osd_req))
return PTR_ERR(osd_req);
if (rbd_obj_is_entire(obj_req) && !obj_req->num_img_extents) {
rbd_assert(obj_req->flags & RBD_OBJ_FLAG_DELETION);
osd_req_op_init(osd_req, 0, CEPH_OSD_OP_DELETE, 0);
} else {
dout("%s %p %llu~%llu -> %llu~%llu\n", __func__,
obj_req, obj_req->ex.oe_off, obj_req->ex.oe_len,
off, next_off - off);
osd_req_op_extent_init(osd_req, 0,
truncate_or_zero_opcode(obj_req),
off, next_off - off, 0, 0);
}
obj_req->write_state = RBD_OBJ_WRITE_START;
__rbd_osd_setup_discard_ops(osd_req, 0);
rbd_osd_format_write(osd_req);
return 0;
}