btrfs-progs: Allow tree to be printed without an fs_info

For btrfs_print_tree() and btrfs_print_leaf(), the usage of fs_info is
mainly for nodesize and sectorsize.

However for nodesize, we can get it from @eb->len without the need for
fs_info at all.

For nodesize, introduce new helper BTRFS_NODEPTR_PER_EXTENT_BUFFER() to
get nodesize from @eb directly.
And with the help of previous modified btrfs_leaf_free_space(),
btrfs_print_tree() can live without fs_info at all.

For btrfs_print_leaf(), we modify print_extent_csum() to accept NULL
fs_info by skipping csum length calculation.

With all these modification, btrfs_print_tree/leaf() can be called
without accessing @fs_info at all, and make it more flexible to handle
binary tree block dump, or inside gdb.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

0 files changed, 0 insertions, 0 deletions