From: David Sterba Date: Fri, 14 Nov 2014 14:05:06 +0000 (+0100) Subject: btrfs: fix wrong accounting of raid1 data profile in statfs X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0d95c1bec906dd1ad951c9c001e798ca52baeb0f;p=linux-beck.git btrfs: fix wrong accounting of raid1 data profile in statfs The sizes that are obtained from space infos are in raw units and have to be adjusted according to the raid factor. This was missing for f_bavail and df reported doubled size for raid1. Reported-by: Martin Steigerwald Fixes: ba7b6e62f420 ("btrfs: adjust statfs calculations according to raid profiles") CC: stable@vger.kernel.org Signed-off-by: David Sterba Signed-off-by: Chris Mason --- diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index dc337d14ef5c..21c60ee2f664 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1851,7 +1851,7 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_bfree -= block_rsv->size >> bits; spin_unlock(&block_rsv->lock); - buf->f_bavail = total_free_data; + buf->f_bavail = div_u64(total_free_data, factor); ret = btrfs_calc_avail_data_space(fs_info->tree_root, &total_free_data); if (ret) return ret;