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btrfs: compression: remove dead comments in btrfs_compress_heuristic()

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Since commit a440d48c7f ("Btrfs: heuristic: implement sampling
logic"), btrfs_compress_heuristic() is no longer a simple "return true",
but more complex to determine if we should compress.

Thus the comment is dead and can be confusing, just remove it.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
2024-02-22 14:00:25 +10:30
committed by David Sterba
parent b086c5bd99
commit 25da852d83
1 changed files with 0 additions and 5 deletions
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fs/btrfs/compression.c
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@@ -1476,11 +1476,6 @@ static void heuristic_collect_sample(struct inode *inode, u64 start, u64 end,
/* /*
* Compression heuristic. * Compression heuristic.
* *
* For now is's a naive and optimistic 'return true', we'll extend the logic to
* quickly (compared to direct compression) detect data characteristics
* (compressible/incompressible) to avoid wasting CPU time on incompressible
* data.
*
* The following types of analysis can be performed: * The following types of analysis can be performed:
* - detect mostly zero data * - detect mostly zero data
* - detect data with low "byte set" size (text, etc) * - detect data with low "byte set" size (text, etc)