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libceph: pass object number back to calc_layout() caller 

Have calc_layout() pass the computed object number back to its
caller.  (This is a small step to simplify review.)

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-02-15 22:10:17 -06:00 committed by Sage Weil
parent 07c09b7255
commit 47a05811b6
1 changed files with 7 additions and 6 deletions
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13
net/ceph/osd_client.c
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@ -67,16 +67,15 @@ static int calc_layout(struct ceph_vino vino,
struct ceph_file_layout *layout,
u64 off, u64 *plen,
struct ceph_osd_request *req,
struct ceph_osd_req_op *op)
struct ceph_osd_req_op *op, u64 *bno)
{
u64 orig_len = *plen;
u64 bno = 0;
u64 objoff = 0;
u64 objlen = 0;
int r;
/* object extent? */
r = ceph_calc_file_object_mapping(layout, off, orig_len, &bno,
r = ceph_calc_file_object_mapping(layout, off, orig_len, bno,
&objoff, &objlen);
if (r < 0)
return r;
@ -104,9 +103,9 @@ static int calc_layout(struct ceph_vino vino,
op->payload_len = *plen;
dout("calc_layout bno=%llx %llu~%llu (%d pages)\n",
bno, objoff, objlen, req->r_num_pages);
*bno, objoff, objlen, req->r_num_pages);
snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno);
snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, *bno);
req->r_oid_len = strlen(req->r_oid);
return 0;
@ -449,6 +448,7 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
struct ceph_osd_req_op ops[2];
struct ceph_osd_request *req;
unsigned int num_op = 1;
u64 bno = 0;
int r;
memset(&ops, 0, sizeof ops);
@ -469,11 +469,12 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
req->r_flags = flags;
/* calculate max write size */
r = calc_layout(vino, layout, off, plen, req, ops);
r = calc_layout(vino, layout, off, plen, req, ops, &bno);
if (r < 0) {
ceph_osdc_put_request(req);
return ERR_PTR(r);
}
req->r_file_layout = *layout; /* keep a copy */
/* in case it differs from natural (file) alignment that