dm integrity: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY

Don't use crypto drivers that have the flag CRYPTO_ALG_ALLOCATES_MEMORY
set. These drivers allocate memory and thus they are not suitable for
block I/O processing.
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: NMike Snitzer <snitzer@redhat.com>

drivers/md/dm-integrity.c

@@ -3462,7 +3462,7 @@ static int get_mac(struct crypto_shash **hash, struct alg_spec *a, char **error,
 	int r;
 
 	if (a->alg_string) {
-		*hash = crypto_alloc_shash(a->alg_string, 0, 0);
+		*hash = crypto_alloc_shash(a->alg_string, 0, CRYPTO_ALG_ALLOCATES_MEMORY);
 		if (IS_ERR(*hash)) {
 			*error = error_alg;
 			r = PTR_ERR(*hash);
@@ -3519,7 +3519,7 @@ static int create_journal(struct dm_integrity_c *ic, char **error)
 		struct journal_completion comp;
 
 		comp.ic = ic;
-		ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, 0);
+		ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATES_MEMORY);
 		if (IS_ERR(ic->journal_crypt)) {
 			*error = "Invalid journal cipher";
 			r = PTR_ERR(ic->journal_crypt);