diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c
index 7c04989..7755f91 100644
--- a/crypto/asymmetric_keys/asymmetric_type.c
+++ b/crypto/asymmetric_keys/asymmetric_type.c
@@ -59,8 +59,8 @@
  *	"id:<id>"	- request a key matching the ID
  *	"<subtype>:<id>" - request a key of a subtype
  */
-static int asymmetric_key_cmp(const struct key *key,
-			      const struct key_match_data *match_data)
+static bool asymmetric_key_cmp(const struct key *key,
+			       const struct key_match_data *match_data)
 {
 	const struct asymmetric_key_subtype *subtype = asymmetric_key_subtype(key);
 	const char *description = match_data->raw_data;
diff --git a/include/linux/key-type.h b/include/linux/key-type.h
index c14816b..ff9f1d3 100644
--- a/include/linux/key-type.h
+++ b/include/linux/key-type.h
@@ -56,10 +56,12 @@
  * Preparsed matching criterion.
  */
 struct key_match_data {
-	/* Comparison function, defaults to type->match, but can be replaced by
-	 * type->match_preparse(). */
-	int (*cmp)(const struct key *key,
-		   const struct key_match_data *match_data);
+	/* Comparison function, defaults to exact description match, but can be
+	 * overridden by type->match_preparse().  Should return true if a match
+	 * is found and false if not.
+	 */
+	bool (*cmp)(const struct key *key,
+		    const struct key_match_data *match_data);
 
 	const void	*raw_data;	/* Raw match data */
 	void		*preparsed;	/* For ->match_preparse() to stash stuff */
diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c
index a07b9ba..31cd4fd 100644
--- a/net/dns_resolver/dns_key.c
+++ b/net/dns_resolver/dns_key.c
@@ -176,8 +176,8 @@
  * The domain name may be a simple name or an absolute domain name (which
  * should end with a period).  The domain name is case-independent.
  */
-static int dns_resolver_cmp(const struct key *key,
-			    const struct key_match_data *match_data)
+static bool dns_resolver_cmp(const struct key *key,
+			     const struct key_match_data *match_data)
 {
 	int slen, dlen, ret = 0;
 	const char *src = key->description, *dsp = match_data->raw_data;
diff --git a/security/keys/internal.h b/security/keys/internal.h
index e66a16c..b8960c4 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -127,8 +127,8 @@
 	struct timespec		now;
 };
 
-extern int key_default_cmp(const struct key *key,
-			   const struct key_match_data *match_data);
+extern bool key_default_cmp(const struct key *key,
+			    const struct key_match_data *match_data);
 extern key_ref_t keyring_search_aux(key_ref_t keyring_ref,
 				    struct keyring_search_context *ctx);
 
@@ -150,8 +150,8 @@
 					struct key *dest_keyring,
 					unsigned long flags);
 
-extern int lookup_user_key_possessed(const struct key *key,
-				     const struct key_match_data *match_data);
+extern bool lookup_user_key_possessed(const struct key *key,
+				      const struct key_match_data *match_data);
 extern key_ref_t lookup_user_key(key_serial_t id, unsigned long flags,
 				 key_perm_t perm);
 #define KEY_LOOKUP_CREATE	0x01
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 253c9a0..8177010 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -513,8 +513,8 @@
 /*
  * By default, we keys found by getting an exact match on their descriptions.
  */
-int key_default_cmp(const struct key *key,
-		    const struct key_match_data *match_data)
+bool key_default_cmp(const struct key *key,
+		     const struct key_match_data *match_data)
 {
 	return strcmp(key->description, match_data->raw_data) == 0;
 }
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 08bd533..bd536cb 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -489,8 +489,8 @@
 /*
  * See if the key we're looking at is the target key.
  */
-int lookup_user_key_possessed(const struct key *key,
-			      const struct key_match_data *match_data)
+bool lookup_user_key_possessed(const struct key *key,
+			       const struct key_match_data *match_data)
 {
 	return key == match_data->raw_data;
 }