btrfs: get fs_info from eb in lock_extent_buffer_for_io

We can read fs_info from extent buffer and can drop it from the
parameters.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-03-20 11:21:41 +01:00
commit 9df76fb544