btrfs: add member for a specific checksum driver

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Currently all the checksum algorithms generate a fixed size digest size
and we use it.  The on-disk format can hold up to BTRFS_CSUM_SIZE bytes
and BLAKE2b produces digest of 512 bits by default. We can't do that and
will use the blake2b-256, this needs to be passed to the crypto API.

Separate that from the base algorithm name and add a member to request
specific driver, in this case with the digest size.

The only place that uses the driver name is the crypto API setup.

Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

David Sterba 2019-10-08 18:41:33 +02:00

parent 41e6d2a808

commit b4e967be43

3 changed files with 16 additions and 3 deletions

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12

fs/btrfs/ctree.c

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1

fs/btrfs/ctree.h

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6

fs/btrfs/disk-io.c

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