Index: uspace/srv/fs/fat/fat_ops.c
===================================================================
--- uspace/srv/fs/fat/fat_ops.c	(revision 32f623d91ff1aedbf20c62ea4be540fa7c29bf6d)
+++ uspace/srv/fs/fat/fat_ops.c	(revision ee9ea160ea1ceb3f62e5c5e92edbedc9ec7200eb)
@@ -871,5 +871,5 @@
     aoff64_t *size, unsigned *linkcnt)
 {
-	enum cache_mode cmode;
+	enum cache_mode cmode = CACHE_MODE_WB;
 	fat_bs_t *bs;
 	fat_instance_t *instance;
@@ -879,12 +879,17 @@
 	if (!instance)
 		return ENOMEM;
-
 	instance->lfn_enabled = true;
 
-	/* Check for option enabling write through. */
-	if (str_cmp(opts, "wtcache") == 0)
-		cmode = CACHE_MODE_WT;
-	else
-		cmode = CACHE_MODE_WB;
+	/* Parse mount options. */
+	char *mntopts = (char *) opts;
+	char *saveptr;
+	char *opt;
+	while ((opt = strtok_r(mntopts, " ,", &saveptr)) != NULL) {
+		if (str_cmp(opt, "wtcache") == 0)
+			cmode = CACHE_MODE_WT;
+		else if (str_cmp(opt, "nolfn") == 0)
+			instance->lfn_enabled = false;
+		mntopts = NULL;
+	}
 
 	/* initialize libblock */