From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B3B9C4363D for ; Thu, 24 Sep 2020 11:49:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 10DAD238A1 for ; Thu, 24 Sep 2020 11:49:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="V9uZJVsh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727458AbgIXLtC (ORCPT ); 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <4fea8a706aedf7407d6af7a545126511168e15f5.1600940809.git.anand.jain@oracle.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 24.09.20 г. 13:11 ч., Anand Jain wrote: > btrfs_device::disk_total_bytes is set even for a seed device (the > comment is wrong). > > The function fill_device_from_item() does the job of reading it from the > item and updating btrfs_device::disk_total_bytes. So both the missing > device and the seed devices do have their disk_total_bytes updated. > > So this patch removes the check dev->disk_total_bytes == 0 in the > function verify_one_dev_extent() > > Signed-off-by: Anand Jain > --- > fs/btrfs/volumes.c | 15 --------------- > 1 file changed, 15 deletions(-) > > diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c > index 7f43ed88fffc..9be40eece8ed 100644 > --- a/fs/btrfs/volumes.c > +++ b/fs/btrfs/volumes.c > @@ -7578,21 +7578,6 @@ static int verify_one_dev_extent(struct btrfs_fs_info *fs_info, > goto out; > } > > - /* It's possible this device is a dummy for seed device */ > - if (dev->disk_total_bytes == 0) { > - struct btrfs_fs_devices *devs; > - > - devs = list_first_entry(&fs_info->fs_devices->seed_list, > - struct btrfs_fs_devices, seed_list); > - dev = btrfs_find_device(devs, devid, NULL, NULL, false); > - if (!dev) { > - btrfs_err(fs_info, "failed to find seed devid %llu", > - devid); > - ret = -EUCLEAN; > - goto out; > - } > - } The commit which introduced this check states that the device with a disk_total_bytes = 0 occurs from clone_fs_devices called from open_seed. It seems the check is legit and your changelog doesn't account for that if it's safe you should provide description why is that. > - > if (physical_offset + physical_len > dev->disk_total_bytes) { > btrfs_err(fs_info, > "dev extent devid %llu physical offset %llu len %llu is beyond device boundary %llu", >