btrfs-progs: Use fs_info instead of root for BTRFS_LEAF_DATA_SIZE

Do a cleanup. Also make it consistent with kernel.  Use fs_info instead
of root for BTRFS_LEAF_DATA_SIZE, since maybe in some situation we do
not know root, but just know fs_info.

Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/volumes.c b/volumes.c
index 54873676..edad367b 100644
--- a/volumes.c
+++ b/volumes.c
@@ -826,7 +826,7 @@ error:
 	return ret;
 }
 
-#define BTRFS_MAX_DEVS(r) ((BTRFS_LEAF_DATA_SIZE(r)		\
+#define BTRFS_MAX_DEVS(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info)	\
 			- sizeof(struct btrfs_item)		\
 			- sizeof(struct btrfs_chunk))		\
 			/ sizeof(struct btrfs_stripe) + 1)