diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-rbd | 20 | ||||
| -rw-r--r-- | drivers/block/rbd.c | 137 |
2 files changed, 4 insertions, 153 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd index cd9213c..0a30647 100644 --- a/Documentation/ABI/testing/sysfs-bus-rbd +++ b/Documentation/ABI/testing/sysfs-bus-rbd @@ -66,27 +66,7 @@ current_snap The current snapshot for which the device is mapped. -snap_* - - A directory per each snapshot - parent Information identifying the pool, image, and snapshot id for the parent image in a layered rbd image (format 2 only). - -Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name> -------------------------------------------------------------- - -snap_id - - The rados internal snapshot id assigned for this snapshot - -snap_size - - The size of the image when this snapshot was taken. - -snap_features - - A hexadecimal encoding of the feature bits for this snapshot. - diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 4d99d40..515fbf9 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -272,7 +272,6 @@ struct rbd_img_request { list_for_each_entry_safe_reverse(oreq, n, &(ireq)->obj_requests, links) struct rbd_snap { - struct device dev; const char *name; u64 size; struct list_head node; @@ -358,7 +357,6 @@ static DEFINE_SPINLOCK(rbd_client_list_lock); static int rbd_img_request_submit(struct rbd_img_request *img_request); static int rbd_dev_snaps_update(struct rbd_device *rbd_dev); -static int rbd_dev_snaps_register(struct rbd_device *rbd_dev); static void rbd_dev_release(struct device *dev); static void rbd_remove_snap_dev(struct rbd_snap *snap); @@ -3069,8 +3067,6 @@ static int rbd_dev_v1_refresh(struct rbd_device *rbd_dev, u64 *hver) kfree(h.object_prefix); ret = rbd_dev_snaps_update(rbd_dev); - if (!ret) - ret = rbd_dev_snaps_register(rbd_dev); up_write(&rbd_dev->header_rwsem); @@ -3344,71 +3340,6 @@ static struct device_type rbd_device_type = { .release = rbd_sysfs_dev_release, }; - -/* - sysfs - snapshots -*/ - -static ssize_t rbd_snap_size_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rbd_snap *snap = container_of(dev, struct rbd_snap, dev); - - return sprintf(buf, "%llu\n", (unsigned long long)snap->size); -} - -static ssize_t rbd_snap_id_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rbd_snap *snap = container_of(dev, struct rbd_snap, dev); - - return sprintf(buf, "%llu\n", (unsigned long long)snap->id); -} - -static ssize_t rbd_snap_features_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct rbd_snap *snap = container_of(dev, struct rbd_snap, dev); - - return sprintf(buf, "0x%016llx\n", - (unsigned long long) snap->features); -} - -static DEVICE_ATTR(snap_size, S_IRUGO, rbd_snap_size_show, NULL); -static DEVICE_ATTR(snap_id, S_IRUGO, rbd_snap_id_show, NULL); -static DEVICE_ATTR(snap_features, S_IRUGO, rbd_snap_features_show, NULL); - -static struct attribute *rbd_snap_attrs[] = { - &dev_attr_snap_size.attr, - &dev_attr_snap_id.attr, - &dev_attr_snap_features.attr, - NULL, -}; - -static struct attribute_group rbd_snap_attr_group = { - .attrs = rbd_snap_attrs, -}; - -static void rbd_snap_dev_release(struct device *dev) -{ - struct rbd_snap *snap = container_of(dev, struct rbd_snap, dev); - kfree(snap->name); - kfree(snap); -} - -static const struct attribute_group *rbd_snap_attr_groups[] = { - &rbd_snap_attr_group, - NULL -}; - -static struct device_type rbd_snap_device_type = { - .groups = rbd_snap_attr_groups, - .release = rbd_snap_dev_release, -}; - static struct rbd_spec *rbd_spec_get(struct rbd_spec *spec) { kref_get(&spec->kref); @@ -3483,38 +3414,11 @@ static void rbd_dev_destroy(struct rbd_device *rbd_dev) kfree(rbd_dev); } -static bool rbd_snap_registered(struct rbd_snap *snap) -{ - bool ret = snap->dev.type == &rbd_snap_device_type; - bool reg = device_is_registered(&snap->dev); - - rbd_assert(!ret ^ reg); - - return ret; -} - static void rbd_remove_snap_dev(struct rbd_snap *snap) { list_del(&snap->node); - if (device_is_registered(&snap->dev)) - device_unregister(&snap->dev); -} - -static int rbd_register_snap_dev(struct rbd_snap *snap, - struct device *parent) -{ - struct device *dev = &snap->dev; - int ret; - - dev->type = &rbd_snap_device_type; - dev->parent = parent; - dev->release = rbd_snap_dev_release; - dev_set_name(dev, "%s%s", RBD_SNAP_DEV_NAME_PREFIX, snap->name); - dout("%s: registering device for snapshot %s\n", __func__, snap->name); - - ret = device_register(dev); - - return ret; + kfree(snap->name); + kfree(snap); } static struct rbd_snap *__rbd_add_snap_dev(struct rbd_device *rbd_dev, @@ -4089,8 +3993,6 @@ static int rbd_dev_v2_refresh(struct rbd_device *rbd_dev, u64 *hver) dout("rbd_dev_snaps_update returned %d\n", ret); if (ret) goto out; - ret = rbd_dev_snaps_register(rbd_dev); - dout("rbd_dev_snaps_register returned %d\n", ret); out: up_write(&rbd_dev->header_rwsem); @@ -4145,11 +4047,11 @@ static int rbd_dev_snaps_update(struct rbd_device *rbd_dev) */ if (rbd_dev->spec->snap_id == snap->id) clear_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags); - rbd_remove_snap_dev(snap); - dout("%ssnap id %llu has been removed\n", + dout("removing %ssnap id %llu\n", rbd_dev->spec->snap_id == snap->id ? "mapped " : "", (unsigned long long) snap->id); + rbd_remove_snap_dev(snap); /* Done with this list entry; advance */ @@ -4209,31 +4111,6 @@ static int rbd_dev_snaps_update(struct rbd_device *rbd_dev) return 0; } -/* - * Scan the list of snapshots and register the devices for any that - * have not already been registered. - */ -static int rbd_dev_snaps_register(struct rbd_device *rbd_dev) -{ - struct rbd_snap *snap; - int ret = 0; - - dout("%s:\n", __func__); - if (WARN_ON(!device_is_registered(&rbd_dev->dev))) - return -EIO; - - list_for_each_entry(snap, &rbd_dev->snaps, node) { - if (!rbd_snap_registered(snap)) { - ret = rbd_register_snap_dev(snap, &rbd_dev->dev); - if (ret < 0) - break; - } - } - dout("%s: returning %d\n", __func__, ret); - - return ret; -} - static int rbd_bus_add_dev(struct rbd_device *rbd_dev) { struct device *dev; @@ -4840,12 +4717,6 @@ static int rbd_dev_probe_finish(struct rbd_device *rbd_dev) rbd_dev->parent = parent; } - down_write(&rbd_dev->header_rwsem); - ret = rbd_dev_snaps_register(rbd_dev); - up_write(&rbd_dev->header_rwsem); - if (ret) - goto err_out_bus; - ret = rbd_dev_header_watch_sync(rbd_dev, 1); if (ret) goto err_out_bus; |