diff options
| -rw-r--r-- | fs/btrfs/volumes.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index ac7b483754c4..86990b7a60ed 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1066,8 +1066,6 @@ static void btrfs_close_bdev(struct btrfs_device *device) static void btrfs_close_one_device(struct btrfs_device *device) { struct btrfs_fs_devices *fs_devices = device->fs_devices; - struct btrfs_device *new_device; - struct rcu_string *name; if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) && device->devid != BTRFS_DEV_REPLACE_DEVID) { @@ -1079,25 +1077,22 @@ static void btrfs_close_one_device(struct btrfs_device *device) fs_devices->missing_devices--; btrfs_close_bdev(device); - if (device->bdev) + if (device->bdev) { fs_devices->open_devices--; - - new_device = btrfs_alloc_device(NULL, &device->devid, - device->uuid); - BUG_ON(IS_ERR(new_device)); /* -ENOMEM */ - - /* Safe because we are under uuid_mutex */ - if (device->name) { - name = rcu_string_strdup(device->name->str, GFP_NOFS); - BUG_ON(!name); /* -ENOMEM */ - rcu_assign_pointer(new_device->name, name); + device->bdev = NULL; } + clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state); - list_replace_rcu(&device->dev_list, &new_device->dev_list); - new_device->fs_devices = device->fs_devices; + device->fs_info = NULL; + atomic_set(&device->dev_stats_ccnt, 0); + extent_io_tree_release(&device->alloc_state); - synchronize_rcu(); - btrfs_free_device(device); + /* Verify the device is back in a pristine state */ + ASSERT(!test_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state)); + ASSERT(!test_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state)); + ASSERT(list_empty(&device->dev_alloc_list)); + ASSERT(list_empty(&device->post_commit_list)); + ASSERT(atomic_read(&device->reada_in_flight) == 0); } static int close_fs_devices(struct btrfs_fs_devices *fs_devices) |