diff options
Diffstat (limited to 'fs/ceph/osd_client.c')
| -rw-r--r-- | fs/ceph/osd_client.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c index a1800fb63237..374f0013956c 100644 --- a/fs/ceph/osd_client.c +++ b/fs/ceph/osd_client.c @@ -87,6 +87,13 @@ void ceph_osdc_release_request(struct kref *kref) ceph_msg_put(req->r_request); if (req->r_reply) ceph_msg_put(req->r_reply); + if (req->r_con_filling_pages) { + dout("release_request revoking pages %p from con %p\n", + req->r_pages, req->r_con_filling_pages); + ceph_con_revoke_pages(req->r_con_filling_pages, + req->r_pages); + ceph_con_put(req->r_con_filling_pages); + } if (req->r_own_pages) ceph_release_page_vector(req->r_pages, req->r_num_pages); @@ -687,7 +694,8 @@ static void handle_timeout(struct work_struct *work) * handle osd op reply. either call the callback if it is specified, * or do the completion to wake up the waiting thread. */ -static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) +static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, + struct ceph_connection *con) { struct ceph_osd_reply_head *rhead = msg->front.iov_base; struct ceph_osd_request *req; @@ -715,6 +723,16 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) ceph_osdc_get_request(req); flags = le32_to_cpu(rhead->flags); + /* + * if this connection filled our pages, drop our reference now, to + * avoid a (safe but slower) revoke later. + */ + if (req->r_con_filling_pages == con && req->r_pages == msg->pages) { + dout(" got pages, dropping con_filling_pages ref %p\n", con); + req->r_con_filling_pages = NULL; + ceph_con_put(con); + } + if (req->r_reply) { /* * once we see the message has been received, we don't @@ -1007,14 +1025,20 @@ static int prepare_pages(struct ceph_connection *con, struct ceph_msg *m, } dout("prepare_pages tid %llu has %d pages, want %d\n", tid, req->r_num_pages, want); - if (likely(req->r_num_pages >= want && !req->r_prepared_pages)) { - m->pages = req->r_pages; - m->nr_pages = req->r_num_pages; - req->r_reply = m; /* only for duration of read over socket */ - ceph_msg_get(m); - req->r_prepared_pages = 1; - ret = 0; /* success */ + if (unlikely(req->r_num_pages < want)) + goto out; + + if (req->r_con_filling_pages) { + dout("revoking pages %p from old con %p\n", req->r_pages, + req->r_con_filling_pages); + ceph_con_revoke_pages(req->r_con_filling_pages, req->r_pages); + ceph_con_put(req->r_con_filling_pages); } + req->r_con_filling_pages = ceph_con_get(con); + req->r_reply = ceph_msg_get(m); /* for duration of read over socket */ + m->pages = req->r_pages; + m->nr_pages = req->r_num_pages; + ret = 0; /* success */ out: mutex_unlock(&osdc->request_mutex); return ret; @@ -1269,7 +1293,7 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) ceph_osdc_handle_map(osdc, msg); break; case CEPH_MSG_OSD_OPREPLY: - handle_reply(osdc, msg); + handle_reply(osdc, msg, con); break; default: |
