btrfs: reloc: remove the open-coded goto loop for breadth-first search

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build_backref_tree() uses "goto again;" to implement a breadth-first
search to build backref cache.

This patch will extract most of its work into a wrapper,
handle_one_tree_block(), and use a do {} while() loop to implement the
same thing.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2020-03-05 14:49:29 +08:00 • committed by David Sterba

parent 0304f2d8cc

commit e7d571c7b0

1 changed files with 88 additions and 81 deletions

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175

fs/btrfs/relocation.c

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