btrfs: extract the max compression chunk size into a macro

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We have two locations using open-coded 512K size, as the async chunk
size.

For compression we have not only the max size a compressed extent can
represent (128K), but also how large an async chunk can be (512K).

Although we have a macro for the maximum compressed extent size, we do
not have any macro for the async chunk size.

Add such a macro and replace the two open-coded SZ_512K.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2026-02-27 13:15:53 +10:30 • committed by David Sterba

parent 45cc960ff7

commit cab4c8b594

2 changed files with 5 additions and 2 deletions

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3

fs/btrfs/compression.h

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4

fs/btrfs/inode.c

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