Add blake2b (with 256 bit digest) to the list of possible checksumming
algorithms used by BTRFS.
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
---
fs/btrfs/ctree.c | 2 ++
fs/btrfs/disk-io.c | 1 +
fs/btrfs/super.c | 1 +
include/uapi/linux/btrfs_tree.h | 1 +
4 files changed, 5 insertions(+)
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index c211216b4524..5b6e86aaf2e1 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -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)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 948ed5ac0794..7c345c4bc817 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -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;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 36440336c08b..5c6796caebb5 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2464,3 +2464,4 @@ MODULE_LICENSE("GPL");
MODULE_SOFTDEP("pre: crc32c");
MODULE_SOFTDEP("pre: xxhash64");
MODULE_SOFTDEP("pre: sha256");
+MODULE_SOFTDEP("pre: blake2b");
diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h
index e2823c9b2061..5160be1d7332 100644
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -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,
};
/*
--
2.23.0
