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authorDavid Sterba <dsterba@suse.com>2019-10-08 18:41:33 +0200
committerDavid Sterba <dsterba@suse.com>2019-11-18 17:51:44 +0100
commitb4e967be431cf37f56cd1993592943007d7ab03b (patch)
treed4b88246e91eac13a954d860800e0cfca3226b27 /fs/btrfs/ctree.h
parentbtrfs: sysfs: show used checksum driver per filesystem (diff)
downloadlinux-dev-b4e967be431cf37f56cd1993592943007d7ab03b.tar.xz
linux-dev-b4e967be431cf37f56cd1993592943007d7ab03b.zip
btrfs: add member for a specific checksum driver
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>
Diffstat (limited to 'fs/btrfs/ctree.h')
-rw-r--r--fs/btrfs/ctree.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index b17944995e09..4a842c0fa062 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2163,6 +2163,7 @@ BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
int btrfs_super_csum_size(const struct btrfs_super_block *s);
const char *btrfs_super_csum_name(u16 csum_type);
+const char *btrfs_super_csum_driver(u16 csum_type);
size_t __const btrfs_get_num_csums(void);