From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:40208 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752116AbdFOMwq (ORCPT ); Thu, 15 Jun 2017 08:52:46 -0400 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 6974EAD55 for ; Thu, 15 Jun 2017 12:52:45 +0000 (UTC) From: Nikolay Borisov To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.com, jeffm@suse.com, Nikolay Borisov Subject: [PATCH 2/2] btrfs: Round up values which are written for total_bytes_size Date: Thu, 15 Jun 2017 15:52:35 +0300 Message-Id: <1497531155-9703-3-git-send-email-nborisov@suse.com> In-Reply-To: <1497531155-9703-1-git-send-email-nborisov@suse.com> References: <1497531155-9703-1-git-send-email-nborisov@suse.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Signed-off-by: Nikolay Borisov --- fs/btrfs/volumes.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index e37f95976443..adf32f46a73f 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2387,7 +2387,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path device->io_width = fs_info->sectorsize; device->io_align = fs_info->sectorsize; device->sector_size = fs_info->sectorsize; - device->total_bytes = i_size_read(bdev->bd_inode); + device->total_bytes = round_down(i_size_read(bdev->bd_inode), + fs_info->sectorsize); device->disk_total_bytes = device->total_bytes; device->commit_total_bytes = device->total_bytes; device->fs_info = fs_info; @@ -2424,7 +2425,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path tmp = btrfs_super_total_bytes(fs_info->super_copy); btrfs_set_super_total_bytes(fs_info->super_copy, - tmp + device->total_bytes); + round_down(tmp + device->total_bytes, fs_info->sectorsize)); tmp = btrfs_super_num_devices(fs_info->super_copy); btrfs_set_super_num_devices(fs_info->super_copy, tmp + 1); @@ -2687,6 +2688,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (!device->writeable) return -EACCES; + new_size = round_down(new_size, fs_info->sectorsize); + mutex_lock(&fs_info->chunk_mutex); old_total = btrfs_super_total_bytes(super_copy); diff = new_size - device->total_bytes; @@ -2699,7 +2702,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, fs_devices = fs_info->fs_devices; - btrfs_set_super_total_bytes(super_copy, old_total + diff); + btrfs_set_super_total_bytes(super_copy, + round_down(old_total + diff, fs_info->sectorsize)); device->fs_devices->total_rw_bytes += diff; btrfs_device_set_total_bytes(device, new_size); @@ -4389,7 +4393,10 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) struct btrfs_super_block *super_copy = fs_info->super_copy; u64 old_total = btrfs_super_total_bytes(super_copy); u64 old_size = btrfs_device_get_total_bytes(device); - u64 diff = old_size - new_size; + u64 diff; + + new_size = round_down(new_size, fs_info->sectorsize); + diff = old_size - new_size; if (device->is_tgtdev_for_dev_replace) return -EINVAL; @@ -4516,7 +4523,8 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) &fs_info->fs_devices->resized_devices); WARN_ON(diff > old_total); - btrfs_set_super_total_bytes(super_copy, old_total - diff); + btrfs_set_super_total_bytes(super_copy, + round_down(old_total - diff, fs_info->sectorsize)); mutex_unlock(&fs_info->chunk_mutex); /* Now btrfs_update_device() will change the on-disk size. */ -- 2.7.4