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libceph: don't update op in calc_layout() 

The ceph_osdc_new_request() an array of osd operations is built up
and filled in partially within that function and partially in the
called function calc_layout().  Move the latter part back out to
ceph_osdc_new_request() so it's all done in one place.  This makes
it unnecessary to pass the op pointer to calc_layout(), so get rid
of that parameter.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-03-13 20:50:01 -05:00 committed by Sage Weil
parent 75d1c941e5
commit a19dadfba9
1 changed files with 18 additions and 18 deletions
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36
net/ceph/osd_client.c
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@ -64,8 +64,7 @@ static int op_has_extent(int op)
* fill osd op in request message.
*/
static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
struct ceph_osd_req_op *op, u64 *objnum,
u64 *objoff, u64 *objlen)
u64 *objnum, u64 *objoff, u64 *objlen)
{
u64 orig_len = *plen;
int r;
@ -81,21 +80,6 @@ static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
orig_len - *plen, off, *plen);
}
if (op_has_extent(op->op)) {
u32 osize = le32_to_cpu(layout->fl_object_size);
op->extent.offset = *objoff;
op->extent.length = *objlen;
if (op->extent.truncate_size <= off - *objoff) {
op->extent.truncate_size = 0;
} else {
op->extent.truncate_size -= off - *objoff;
if (op->extent.truncate_size > osize)
op->extent.truncate_size = osize;
}
}
if (op->op == CEPH_OSD_OP_WRITE)
op->payload_len = *plen;
dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen);
return 0;
@ -594,11 +578,27 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
req->r_flags = flags;
/* calculate max write size */
r = calc_layout(layout, off, plen, ops, &objnum, &objoff, &objlen);
r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen);
if (r < 0) {
ceph_osdc_put_request(req);
return ERR_PTR(r);
}
if (op_has_extent(ops[0].op)) {
u32 osize = le32_to_cpu(layout->fl_object_size);
ops[0].extent.offset = objoff;
ops[0].extent.length = objlen;
if (ops[0].extent.truncate_size <= off - objoff) {
ops[0].extent.truncate_size = 0;
} else {
ops[0].extent.truncate_size -= off - objoff;
if (ops[0].extent.truncate_size > osize)
ops[0].extent.truncate_size = osize;
}
}
if (ops[0].op == CEPH_OSD_OP_WRITE)
ops[0].payload_len = *plen;
req->r_file_layout = *layout; /* keep a copy */
snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx",