diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 62460e231f02..2600cb5ac393 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -3084,6 +3084,7 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
 {
 	struct r5l_log *log;
 	struct md_thread *thread;
+	char cache_name[48];
 	int ret;
 
 	pr_debug("md/raid:%s: using device %pg as journal\n",
@@ -3123,7 +3124,16 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
 	INIT_LIST_HEAD(&log->flushing_ios);
 	INIT_LIST_HEAD(&log->finished_ios);
 
-	log->io_kc = KMEM_CACHE(r5l_io_unit, 0);
+	if (mddev_is_dm(conf->mddev))
+		snprintf(cache_name, sizeof(cache_name), "r5l_io_unit-%p",
+			 conf->mddev);
+	else
+		snprintf(cache_name, sizeof(cache_name), "r5l_io_unit-%s",
+			 mdname(conf->mddev));
+
+	log->io_kc = kmem_cache_create(cache_name, sizeof(struct r5l_io_unit),
+				       __alignof__(struct r5l_io_unit),
+				       0, NULL);
 	if (!log->io_kc)
 		goto io_kc;
 
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c
index 7f8a9d3fd578..0530632f9d2a 100644
--- a/drivers/md/raid5-ppl.c
+++ b/drivers/md/raid5-ppl.c
@@ -1318,6 +1318,7 @@ int ppl_init_log(struct r5conf *conf)
 {
 	struct ppl_conf *ppl_conf;
 	struct mddev *mddev = conf->mddev;
+	char cache_name[48];
 	int ret = 0;
 	int max_disks;
 	int i;
@@ -1360,7 +1361,16 @@ int ppl_init_log(struct r5conf *conf)
 
 	ppl_conf->mddev = mddev;
 
-	ppl_conf->io_kc = KMEM_CACHE(ppl_io_unit, 0);
+	if (mddev_is_dm(mddev))
+		snprintf(cache_name, sizeof(cache_name), "ppl_io_unit-%p", mddev);
+	else
+		snprintf(cache_name, sizeof(cache_name), "ppl_io_unit-%s",
+			 mdname(mddev));
+
+	ppl_conf->io_kc = kmem_cache_create(cache_name,
+					    sizeof(struct ppl_io_unit),
+					    __alignof__(struct ppl_io_unit),
+					    0, NULL);
 	if (!ppl_conf->io_kc) {
 		ret = -ENOMEM;
 		goto err;