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ceph: fix client_request_forward decoding 

The tid is in the message header, not body.  Broken since 6df058c0.

No need to look at next mds session; just mark the request and be done.
(The old error path was broken too, but now it's gone.)

Signed-off-by: Sage Weil <sage@newdream.net>
hifive-unleashed-5.1
Sage Weil 2010-02-23 14:02:44 -08:00
parent 2600d2dd50
commit a1ea787c7b
1 changed files with 2 additions and 8 deletions
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10
fs/ceph/mds_client.c
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@ -1896,17 +1896,15 @@ static void handle_forward(struct ceph_mds_client *mdsc,
struct ceph_msg *msg)
{
struct ceph_mds_request *req;
u64 tid;
u64 tid = le64_to_cpu(msg->hdr.tid);
u32 next_mds;
u32 fwd_seq;
u8 must_resend;
int err = -EINVAL;
void *p = msg->front.iov_base;
void *end = p + msg->front.iov_len;
int state;
ceph_decode_need(&p, end, sizeof(u64)+2*sizeof(u32), bad);
tid = ceph_decode_64(&p);
ceph_decode_need(&p, end, 2*sizeof(u32), bad);
next_mds = ceph_decode_32(&p);
fwd_seq = ceph_decode_32(&p);
must_resend = ceph_decode_8(&p);
@ -1920,10 +1918,6 @@ static void handle_forward(struct ceph_mds_client *mdsc,
goto out; /* dup reply? */
}
if (next_mds >= mdsc->max_sessions)
goto out;
state = mdsc->sessions[next_mds]->s_state;
if (fwd_seq <= req->r_num_fwd) {
dout("forward %llu to mds%d - old seq %d <= %d\n",
tid, next_mds, req->r_num_fwd, fwd_seq);