block: export blk-crypto symbols required by dm-inlinecrypt

bio_crypt_set_ctx(), blk_crypto_init_key(), and
blk_crypto_start_using_key() are needed to use inline encryption; see
Documentation/block/inline-encryption.rst.  Export them so that
dm-inlinecrypt can use them.  The only reason these weren't exported
before was that inline encryption was previously used only by fs/crypto/
which is built-in code.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

diff --git a/block/blk-crypto.c b/block/blk-crypto.c
index 856d3c5b1fa0d189a05568e500955499d4100d92..40a99a859748a4a9e9ac9fe55cb645bb96226d03 100644 (file)
--- a/block/blk-crypto.c
+++ b/block/blk-crypto.c
@@ -116,6 +116,7 @@ void bio_crypt_set_ctx(struct bio *bio, const struct blk_crypto_key *key,
 
        bio->bi_crypt_context = bc;
 }
+EXPORT_SYMBOL_GPL(bio_crypt_set_ctx);
 
 void __bio_crypt_free_ctx(struct bio *bio)
 {
@@ -349,6 +350,7 @@ int blk_crypto_init_key(struct blk_crypto_key *blk_key,
 
        return 0;
 }
+EXPORT_SYMBOL_GPL(blk_crypto_init_key);
 
 bool blk_crypto_config_supported_natively(struct block_device *bdev,
                                          const struct blk_crypto_config *cfg)
@@ -399,6 +401,7 @@ int blk_crypto_start_using_key(struct block_device *bdev,
        }
        return blk_crypto_fallback_start_using_mode(key->crypto_cfg.crypto_mode);
 }
+EXPORT_SYMBOL_GPL(blk_crypto_start_using_key);
 
 /**
  * blk_crypto_evict_key() - Evict a blk_crypto_key from a block_device