[RFC PATCH 09/18] ceph: Convert notify_id_pages to a ceph_databuf

[David Howells <dhowells@redhat.com>]

Convert linger->notify_id_pages to a ceph_databuf

Signed-off-by: David Howells <dhowells@redhat.com>
---
 include/linux/ceph/osd_client.h |  2 +-
 net/ceph/osd_client.c           | 18 +++++++-----------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 0b02e272acc2..780bd49d2734 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -348,7 +348,7 @@ struct ceph_osd_linger_request {
 	void *data;
 
 	struct ceph_pagelist *request_pl;
-	struct page **notify_id_pages;
+	struct ceph_databuf *notify_id_buf;
 
 	struct page ***preply_pages;
 	size_t *preply_len;
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index aa9d07221149..02c35785ec28 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -2825,11 +2825,8 @@ static void linger_release(struct kref *kref)
 	WARN_ON(!list_empty(&lreq->pending_lworks));
 	WARN_ON(lreq->osd);
 
-	if (lreq->request_pl)
-		ceph_pagelist_release(lreq->request_pl);
-	if (lreq->notify_id_pages)
-		ceph_release_page_vector(lreq->notify_id_pages, 1);
-
+	ceph_pagelist_release(lreq->request_pl);
+	ceph_databuf_release(lreq->notify_id_buf);
 	ceph_osdc_put_request(lreq->reg_req);
 	ceph_osdc_put_request(lreq->ping_req);
 	target_destroy(&lreq->t);
@@ -3210,9 +3207,9 @@ static void send_linger(struct ceph_osd_linger_request *lreq)
 			refcount_inc(&lreq->request_pl->refcnt);
 			osd_req_op_notify_init(req, 0, lreq->linger_id,
 					       lreq->request_pl);
-			ceph_osd_data_pages_init(
+			ceph_osd_databuf_init(
 			    osd_req_op_data(req, 0, notify, response_data),
-			    lreq->notify_id_pages, PAGE_SIZE, 0, false, false);
+			    lreq->notify_id_buf);
 		}
 		dout("lreq %p register\n", lreq);
 		req->r_callback = linger_commit_cb;
@@ -4995,10 +4992,9 @@ int ceph_osdc_notify(struct ceph_osd_client *osdc,
 	}
 
 	/* for notify_id */
-	lreq->notify_id_pages = ceph_alloc_page_vector(1, GFP_NOIO);
-	if (IS_ERR(lreq->notify_id_pages)) {
-		ret = PTR_ERR(lreq->notify_id_pages);
-		lreq->notify_id_pages = NULL;
+	lreq->notify_id_buf = ceph_databuf_alloc(1, PAGE_SIZE, GFP_NOIO);
+	if (!lreq->notify_id_buf) {
+		ret = -ENOMEM;
 		goto out_put_lreq;
 	}