Commit 0d95c1be authored Nov 14, 2014 by David Sterba Committed by Chris Mason Nov 20, 2014

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 <Martin@lichtvoll.de>
Fixes: ba7b6e62 ("btrfs: adjust statfs calculations according to raid profiles")
CC: stable@vger.kernel.org
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

parent 32159242

fs/btrfs/super.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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