Commit 352ae07b authored by David Sterba's avatar David Sterba
Browse files

btrfs: add blake2b to checksumming algorithms 



Add blake2b (with 256 bit digest) to the list of possible checksumming
algorithms used by BTRFS.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent b4e967be

fs/btrfs/ctree.c

+2 −0
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ static const struct btrfs_csums { 
	[BTRFS_CSUM_TYPE_CRC32] = { .size = 4, .name = "crc32c" },

	[BTRFS_CSUM_TYPE_XXHASH] = { .size = 8, .name = "xxhash64" },

	[BTRFS_CSUM_TYPE_SHA256] = { .size = 32, .name = "sha256" },

	[BTRFS_CSUM_TYPE_BLAKE2] = { .size = 32, .name = "blake2b",

				     .driver = "blake2b-256" },

};



int btrfs_super_csum_size(const struct btrfs_super_block *s)

fs/btrfs/disk-io.c

+1 −0
Original line number Diff line number Diff line
@@ -354,6 +354,7 @@ static bool btrfs_supported_super_csum(u16 csum_type) 
	case BTRFS_CSUM_TYPE_CRC32:

	case BTRFS_CSUM_TYPE_XXHASH:

	case BTRFS_CSUM_TYPE_SHA256:

	case BTRFS_CSUM_TYPE_BLAKE2:

		return true;

	default:

		return false;

fs/btrfs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -2464,3 +2464,4 @@ MODULE_LICENSE("GPL"); 
MODULE_SOFTDEP("pre: crc32c");

MODULE_SOFTDEP("pre: xxhash64");

MODULE_SOFTDEP("pre: sha256");

MODULE_SOFTDEP("pre: blake2b-256");

include/uapi/linux/btrfs_tree.h

+1 −0
Original line number Diff line number Diff line
@@ -304,6 +304,7 @@ enum btrfs_csum_type { 
	BTRFS_CSUM_TYPE_CRC32	= 0,

	BTRFS_CSUM_TYPE_XXHASH	= 1,

	BTRFS_CSUM_TYPE_SHA256	= 2,

	BTRFS_CSUM_TYPE_BLAKE2	= 3,

};



/*