btrfs: do not readahead in build_backref_tree

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Here we are just searching down to the bytenr we're building the backref
tree for, and all of it's paths to the roots.  These bytenrs are not
guaranteed to be anywhere near each other, so readahead just generates
extra latency.

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

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Josef Bacik 2020-03-13 17:09:54 -04:00 • committed by David Sterba

parent cd22a51c66

commit d7ff00f608

1 changed files with 0 additions and 2 deletions

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fs/btrfs/relocation.c

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