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libceph: introduce alloc_watch_request()

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ceph_osdc_alloc_messages() call will be moved out of
alloc_linger_request() in the next commit, which means that
ceph_osdc_watch() will need to call ceph_osdc_alloc_messages()
twice.  Add a helper for that.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2018-10-15 15:26:27 +02:00
parent 81c65213d7
commit 39e58c3425
1 changed files with 19 additions and 9 deletions
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28
net/ceph/osd_client.c
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@ -4492,6 +4492,23 @@ alloc_linger_request(struct ceph_osd_linger_request *lreq)
return req;
}
static struct ceph_osd_request *
alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode)
{
struct ceph_osd_request *req;
req = alloc_linger_request(lreq);
if (!req)
return NULL;
/*
* Pass 0 for cookie because we don't know it yet, it will be
* filled in by linger_submit().
*/
osd_req_op_watch_init(req, 0, 0, watch_opcode);
return req;
}
/*
* Returns a handle, caller owns a ref.
*/
@ -4521,25 +4538,18 @@ ceph_osdc_watch(struct ceph_osd_client *osdc,
lreq->t.flags = CEPH_OSD_FLAG_WRITE;
ktime_get_real_ts64(&lreq->mtime);
lreq->reg_req = alloc_linger_request(lreq);
lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH);
if (!lreq->reg_req) {
ret = -ENOMEM;
goto err_put_lreq;
}
lreq->ping_req = alloc_linger_request(lreq);
lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING);
if (!lreq->ping_req) {
ret = -ENOMEM;
goto err_put_lreq;
}
/*
* Pass 0 for cookie because we don't know it yet, it will be
* filled in by linger_submit().
*/
osd_req_op_watch_init(lreq->reg_req, 0, 0, CEPH_OSD_WATCH_OP_WATCH);
osd_req_op_watch_init(lreq->ping_req, 0, 0, CEPH_OSD_WATCH_OP_PING);
linger_submit(lreq);
ret = linger_reg_commit_wait(lreq);
if (ret) {