Linux: disable lockdep for a couple of locks

When running a debug kernel with lockdep enabled there are several locks which report false positives. Set MUTEX_NOLOCKDEP/RW_NOLOCKDEP to disable these warnings. Signed-off-by: Brian Behlendorf <[email protected]>
behlendorf · May 10, 2024 · bd1c945 · bd1c945
1 parent 136c053
commit bd1c945
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/module/os/linux/spl/spl-procfs-list.c b/module/os/linux/spl/spl-procfs-list.c
@@ -234,7 +234,7 @@ procfs_list_install(const char *module,
 		modulestr = kmem_asprintf("%s/%s", module, submodule);
 	else
 		modulestr = kmem_asprintf("%s", module);
-	mutex_init(&procfs_list->pl_lock, NULL, MUTEX_DEFAULT, NULL);
+	mutex_init(&procfs_list->pl_lock, NULL, MUTEX_NOLOCKDEP, NULL);
 	list_create(&procfs_list->pl_list,
 	    procfs_list_node_off + sizeof (procfs_list_node_t),
 	    procfs_list_node_off + offsetof(procfs_list_node_t, pln_link));

diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
@@ -292,8 +292,8 @@ dbuf_cons(void *vdb, void *unused, int kmflag)
 	dmu_buf_impl_t *db = vdb;
 	memset(db, 0, sizeof (dmu_buf_impl_t));
 
-	mutex_init(&db->db_mtx, NULL, MUTEX_DEFAULT, NULL);
-	rw_init(&db->db_rwlock, NULL, RW_DEFAULT, NULL);
+	mutex_init(&db->db_mtx, NULL, MUTEX_NOLOCKDEP, NULL);
+	rw_init(&db->db_rwlock, NULL, RW_NOLOCKDEP, NULL);
 	cv_init(&db->db_changed, NULL, CV_DEFAULT, NULL);
 	multilist_link_init(&db->db_cache_link);
 	zfs_refcount_create(&db->db_holds);
@@ -958,7 +958,7 @@ dbuf_init(void)
 	    0, dbuf_cons, dbuf_dest, NULL, NULL, NULL, 0);
 
 	for (int i = 0; i < hmsize; i++)
-		mutex_init(&h->hash_mutexes[i], NULL, MUTEX_DEFAULT, NULL);
+		mutex_init(&h->hash_mutexes[i], NULL, MUTEX_NOLOCKDEP, NULL);
 
 	dbuf_stats_init(h);