Btrfs: heuristic: add bucket and sample counters and other defines

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Add basic defines and structures for data sampling.

Added macros:
 - For future sampling algo
 - For bucket size

Heuristic workspace:
 - Add bucket for storing byte type counters
 - Add sample array for storing partial copy of input data range
 - Add counter for store current sample size to workspace

Signed-off-by: Timofey Titovets <nefelim4ag@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minor coding style fixes, comments updated ]
Signed-off-by: David Sterba <dsterba@suse.com>

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Timofey Titovets 2017-09-28 17:33:37 +03:00 • committed by David Sterba

parent 4e439a0b18

commit 17b5a6c17e

1 changed files with 52 additions and 1 deletions

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fs/btrfs/compression.c

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