btrfs: take an fs_info directly when the root is not used otherwise

There are loads of functions in btrfs that accept a root parameter
but only use it to obtain an fs_info pointer.  Let's convert those to
just accept an fs_info pointer directly.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 45ef41f247b1..4577c028333a 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -788,8 +788,7 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
                 if (ref->key_for_search.type)
                         continue;
                 BUG_ON(!ref->wanted_disk_byte);
-                eb = read_tree_block(fs_info->tree_root, ref->wanted_disk_byte,
-                                     0);
+                eb = read_tree_block(fs_info, ref->wanted_disk_byte, 0);
                 if (IS_ERR(eb)) {
                         return PTR_ERR(eb);
                 } else if (!extent_buffer_uptodate(eb)) {
@@ -1405,8 +1404,7 @@ again:
                             ref->level == 0) {
                                 struct extent_buffer *eb;
 
-                                eb = read_tree_block(fs_info->extent_root,
-                                                           ref->parent, 0);
+                                eb = read_tree_block(fs_info, ref->parent, 0);
                                 if (IS_ERR(eb)) {
                                         ret = PTR_ERR(eb);
                                         goto out;