diff options
| -rw-r--r-- | drivers/block/rbd.c | 125 |
1 files changed, 64 insertions, 61 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 5c0f044..0343956 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -582,35 +582,36 @@ static int snap_by_name(struct rbd_image_header *header, const char *snap_name, return -ENOENT; } -static int rbd_header_set_snap(struct rbd_device *dev, u64 *size) +static int rbd_header_set_snap(struct rbd_device *rbd_dev, u64 *size) { - struct rbd_image_header *header = &dev->header; + struct rbd_image_header *header = &rbd_dev->header; struct ceph_snap_context *snapc = header->snapc; int ret = -ENOENT; - down_write(&dev->header_rwsem); + down_write(&rbd_dev->header_rwsem); - if (!memcmp(dev->snap_name, RBD_SNAP_HEAD_NAME, + if (!memcmp(rbd_dev->snap_name, RBD_SNAP_HEAD_NAME, sizeof (RBD_SNAP_HEAD_NAME))) { if (header->total_snaps) snapc->seq = header->snap_seq; else snapc->seq = 0; - dev->snap_id = CEPH_NOSNAP; - dev->read_only = 0; + rbd_dev->snap_id = CEPH_NOSNAP; + rbd_dev->read_only = 0; if (size) *size = header->image_size; } else { - ret = snap_by_name(header, dev->snap_name, &snapc->seq, size); + ret = snap_by_name(header, rbd_dev->snap_name, + &snapc->seq, size); if (ret < 0) goto done; - dev->snap_id = snapc->seq; - dev->read_only = 1; + rbd_dev->snap_id = snapc->seq; + rbd_dev->read_only = 1; } ret = 0; done: - up_write(&dev->header_rwsem); + up_write(&rbd_dev->header_rwsem); return ret; } @@ -854,7 +855,7 @@ static void rbd_coll_end_req(struct rbd_request *req, * Send ceph osd request */ static int rbd_do_request(struct request *rq, - struct rbd_device *dev, + struct rbd_device *rbd_dev, struct ceph_snap_context *snapc, u64 snapid, const char *obj, u64 ofs, u64 len, @@ -895,13 +896,13 @@ static int rbd_do_request(struct request *rq, dout("rbd_do_request obj=%s ofs=%lld len=%lld\n", obj, len, ofs); - down_read(&dev->header_rwsem); + down_read(&rbd_dev->header_rwsem); - osdc = &dev->rbd_client->client->osdc; + osdc = &rbd_dev->rbd_client->client->osdc; req = ceph_osdc_alloc_request(osdc, flags, snapc, ops, false, GFP_NOIO, pages, bio); if (!req) { - up_read(&dev->header_rwsem); + up_read(&rbd_dev->header_rwsem); ret = -ENOMEM; goto done_pages; } @@ -926,7 +927,7 @@ static int rbd_do_request(struct request *rq, layout->fl_stripe_unit = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER); layout->fl_stripe_count = cpu_to_le32(1); layout->fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER); - layout->fl_pg_pool = cpu_to_le32(dev->pool_id); + layout->fl_pg_pool = cpu_to_le32(rbd_dev->pool_id); ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno, req, ops); @@ -935,7 +936,7 @@ static int rbd_do_request(struct request *rq, snapc, &mtime, req->r_oid, req->r_oid_len); - up_read(&dev->header_rwsem); + up_read(&rbd_dev->header_rwsem); if (linger_req) { ceph_osdc_set_request_linger(osdc, req); @@ -1012,7 +1013,7 @@ static void rbd_simple_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg /* * Do a synchronous ceph osd operation */ -static int rbd_req_sync_op(struct rbd_device *dev, +static int rbd_req_sync_op(struct rbd_device *rbd_dev, struct ceph_snap_context *snapc, u64 snapid, int opcode, @@ -1049,7 +1050,7 @@ static int rbd_req_sync_op(struct rbd_device *dev, } } - ret = rbd_do_request(NULL, dev, snapc, snapid, + ret = rbd_do_request(NULL, rbd_dev, snapc, snapid, obj, ofs, len, NULL, pages, num_pages, flags, @@ -1076,7 +1077,7 @@ done: * Do an asynchronous ceph osd operation */ static int rbd_do_op(struct request *rq, - struct rbd_device *rbd_dev , + struct rbd_device *rbd_dev, struct ceph_snap_context *snapc, u64 snapid, int opcode, int flags, int num_reply, @@ -1168,7 +1169,7 @@ static int rbd_req_read(struct request *rq, /* * Request sync osd read */ -static int rbd_req_sync_read(struct rbd_device *dev, +static int rbd_req_sync_read(struct rbd_device *rbd_dev, struct ceph_snap_context *snapc, u64 snapid, const char *obj, @@ -1176,7 +1177,7 @@ static int rbd_req_sync_read(struct rbd_device *dev, char *buf, u64 *ver) { - return rbd_req_sync_op(dev, NULL, + return rbd_req_sync_op(rbd_dev, NULL, snapid, CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, @@ -1187,7 +1188,7 @@ static int rbd_req_sync_read(struct rbd_device *dev, /* * Request sync osd watch */ -static int rbd_req_sync_notify_ack(struct rbd_device *dev, +static int rbd_req_sync_notify_ack(struct rbd_device *rbd_dev, u64 ver, u64 notify_id, const char *obj) @@ -1199,11 +1200,11 @@ static int rbd_req_sync_notify_ack(struct rbd_device *dev, if (ret < 0) return ret; - ops[0].watch.ver = cpu_to_le64(dev->header.obj_version); + ops[0].watch.ver = cpu_to_le64(rbd_dev->header.obj_version); ops[0].watch.cookie = notify_id; ops[0].watch.flag = 0; - ret = rbd_do_request(NULL, dev, NULL, CEPH_NOSNAP, + ret = rbd_do_request(NULL, rbd_dev, NULL, CEPH_NOSNAP, obj, 0, 0, NULL, NULL, 0, CEPH_OSD_FLAG_READ, @@ -1218,54 +1219,54 @@ static int rbd_req_sync_notify_ack(struct rbd_device *dev, static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data) { - struct rbd_device *dev = (struct rbd_device *)data; + struct rbd_device *rbd_dev = (struct rbd_device *)data; int rc; - if (!dev) + if (!rbd_dev) return; - dout("rbd_watch_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name, + dout("rbd_watch_cb %s notify_id=%lld opcode=%d\n", rbd_dev->obj_md_name, notify_id, (int)opcode); mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); - rc = __rbd_refresh_header(dev); + rc = __rbd_refresh_header(rbd_dev); mutex_unlock(&ctl_mutex); if (rc) pr_warning(RBD_DRV_NAME "%d got notification but failed to " - " update snaps: %d\n", dev->major, rc); + " update snaps: %d\n", rbd_dev->major, rc); - rbd_req_sync_notify_ack(dev, ver, notify_id, dev->obj_md_name); + rbd_req_sync_notify_ack(rbd_dev, ver, notify_id, rbd_dev->obj_md_name); } /* * Request sync osd watch */ -static int rbd_req_sync_watch(struct rbd_device *dev, +static int rbd_req_sync_watch(struct rbd_device *rbd_dev, const char *obj, u64 ver) { struct ceph_osd_req_op *ops; - struct ceph_osd_client *osdc = &dev->rbd_client->client->osdc; + struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc; int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_WATCH, 0); if (ret < 0) return ret; ret = ceph_osdc_create_event(osdc, rbd_watch_cb, 0, - (void *)dev, &dev->watch_event); + (void *)rbd_dev, &rbd_dev->watch_event); if (ret < 0) goto fail; ops[0].watch.ver = cpu_to_le64(ver); - ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie); + ops[0].watch.cookie = cpu_to_le64(rbd_dev->watch_event->cookie); ops[0].watch.flag = 1; - ret = rbd_req_sync_op(dev, NULL, + ret = rbd_req_sync_op(rbd_dev, NULL, CEPH_NOSNAP, 0, CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, ops, 1, obj, 0, 0, NULL, - &dev->watch_request, NULL); + &rbd_dev->watch_request, NULL); if (ret < 0) goto fail_event; @@ -1274,8 +1275,8 @@ static int rbd_req_sync_watch(struct rbd_device *dev, return 0; fail_event: - ceph_osdc_cancel_event(dev->watch_event); - dev->watch_event = NULL; + ceph_osdc_cancel_event(rbd_dev->watch_event); + rbd_dev->watch_event = NULL; fail: rbd_destroy_ops(ops); return ret; @@ -1284,7 +1285,7 @@ fail: /* * Request sync osd unwatch */ -static int rbd_req_sync_unwatch(struct rbd_device *dev, +static int rbd_req_sync_unwatch(struct rbd_device *rbd_dev, const char *obj) { struct ceph_osd_req_op *ops; @@ -1294,10 +1295,10 @@ static int rbd_req_sync_unwatch(struct rbd_device *dev, return ret; ops[0].watch.ver = 0; - ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie); + ops[0].watch.cookie = cpu_to_le64(rbd_dev->watch_event->cookie); ops[0].watch.flag = 0; - ret = rbd_req_sync_op(dev, NULL, + ret = rbd_req_sync_op(rbd_dev, NULL, CEPH_NOSNAP, 0, CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, @@ -1305,33 +1306,34 @@ static int rbd_req_sync_unwatch(struct rbd_device *dev, 1, obj, 0, 0, NULL, NULL, NULL); rbd_destroy_ops(ops); - ceph_osdc_cancel_event(dev->watch_event); - dev->watch_event = NULL; + ceph_osdc_cancel_event(rbd_dev->watch_event); + rbd_dev->watch_event = NULL; return ret; } struct rbd_notify_info { - struct rbd_device *dev; + struct rbd_device *rbd_dev; }; static void rbd_notify_cb(u64 ver, u64 notify_id, u8 opcode, void *data) { - struct rbd_device *dev = (struct rbd_device *)data; - if (!dev) + struct rbd_device *rbd_dev = (struct rbd_device *)data; + if (!rbd_dev) return; - dout("rbd_notify_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name, + dout("rbd_notify_cb %s notify_id=%lld opcode=%d\n", + rbd_dev->obj_md_name, notify_id, (int)opcode); } /* * Request sync osd notify */ -static int rbd_req_sync_notify(struct rbd_device *dev, +static int rbd_req_sync_notify(struct rbd_device *rbd_dev, const char *obj) { struct ceph_osd_req_op *ops; - struct ceph_osd_client *osdc = &dev->rbd_client->client->osdc; + struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc; struct ceph_osd_event *event; struct rbd_notify_info info; int payload_len = sizeof(u32) + sizeof(u32); @@ -1341,7 +1343,7 @@ static int rbd_req_sync_notify(struct rbd_device *dev, if (ret < 0) return ret; - info.dev = dev; + info.rbd_dev = rbd_dev; ret = ceph_osdc_create_event(osdc, rbd_notify_cb, 1, (void *)&info, &event); @@ -1354,7 +1356,7 @@ static int rbd_req_sync_notify(struct rbd_device *dev, ops[0].watch.prot_ver = RADOS_NOTIFY_VER; ops[0].watch.timeout = 12; - ret = rbd_req_sync_op(dev, NULL, + ret = rbd_req_sync_op(rbd_dev, NULL, CEPH_NOSNAP, 0, CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, @@ -1378,7 +1380,7 @@ fail: /* * Request sync osd read */ -static int rbd_req_sync_exec(struct rbd_device *dev, +static int rbd_req_sync_exec(struct rbd_device *rbd_dev, const char *obj, const char *cls, const char *method, @@ -1402,7 +1404,7 @@ static int rbd_req_sync_exec(struct rbd_device *dev, ops[0].cls.indata = data; ops[0].cls.indata_len = len; - ret = rbd_req_sync_op(dev, NULL, + ret = rbd_req_sync_op(rbd_dev, NULL, CEPH_NOSNAP, 0, CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, @@ -1633,7 +1635,7 @@ out_dh: /* * create a snapshot */ -static int rbd_header_add_snap(struct rbd_device *dev, +static int rbd_header_add_snap(struct rbd_device *rbd_dev, const char *snap_name, gfp_t gfp_flags) { @@ -1645,11 +1647,11 @@ static int rbd_header_add_snap(struct rbd_device *dev, struct ceph_mon_client *monc; /* we should create a snapshot only if we're pointing at the head */ - if (dev->snap_id != CEPH_NOSNAP) + if (rbd_dev->snap_id != CEPH_NOSNAP) return -EINVAL; - monc = &dev->rbd_client->client->monc; - ret = ceph_monc_create_snapid(monc, dev->pool_id, &new_snapid); + monc = &rbd_dev->rbd_client->client->monc; + ret = ceph_monc_create_snapid(monc, rbd_dev->pool_id, &new_snapid); dout("created snapid=%lld\n", new_snapid); if (ret < 0) return ret; @@ -1664,7 +1666,8 @@ static int rbd_header_add_snap(struct rbd_device *dev, ceph_encode_string_safe(&p, e, snap_name, name_len, bad); ceph_encode_64_safe(&p, e, new_snapid, bad); - ret = rbd_req_sync_exec(dev, dev->obj_md_name, "rbd", "snap_add", + ret = rbd_req_sync_exec(rbd_dev, rbd_dev->obj_md_name, + "rbd", "snap_add", data, p - data, &ver); kfree(data); @@ -1672,9 +1675,9 @@ static int rbd_header_add_snap(struct rbd_device *dev, if (ret < 0) return ret; - down_write(&dev->header_rwsem); - dev->header.snapc->seq = new_snapid; - up_write(&dev->header_rwsem); + down_write(&rbd_dev->header_rwsem); + rbd_dev->header.snapc->seq = new_snapid; + up_write(&rbd_dev->header_rwsem); return 0; bad: |
