diff --git a/examples/nvme/perf/perf.c b/examples/nvme/perf/perf.c
index 68e8fa4c4..0271ac0b0 100644
--- a/examples/nvme/perf/perf.c
+++ b/examples/nvme/perf/perf.c
@@ -274,14 +274,14 @@ register_aio_file(const char *path)
 		return -1;
 	}
 
-	size = file_get_size(fd);
+	size = spdk_file_get_size(fd);
 	if (size == 0) {
 		fprintf(stderr, "Could not determine size of AIO device %s\n", path);
 		close(fd);
 		return -1;
 	}
 
-	blklen = dev_get_blocklen(fd);
+	blklen = spdk_dev_get_blocklen(fd);
 	if (blklen == 0) {
 		fprintf(stderr, "Could not determine block size of AIO device %s\n", path);
 		close(fd);
diff --git a/include/spdk/file.h b/include/spdk/file.h
index e696da3f4..1c6b1b45e 100644
--- a/include/spdk/file.h
+++ b/include/spdk/file.h
@@ -36,7 +36,7 @@
 
 #include <stdint.h>
 
-uint64_t file_get_size(int fd);
-uint32_t dev_get_blocklen(int fd);
+uint64_t spdk_file_get_size(int fd);
+uint32_t spdk_dev_get_blocklen(int fd);
 
 #endif
diff --git a/lib/util/file.c b/lib/util/file.c
index b002502dd..1a754c192 100644
--- a/lib/util/file.c
+++ b/lib/util/file.c
@@ -64,7 +64,7 @@ dev_get_size(int fd)
 }
 
 uint32_t
-dev_get_blocklen(int fd)
+spdk_dev_get_blocklen(int fd)
 {
 #if defined(DKIOCGETBLOCKSIZE) /* FreeBSD */
 	uint32_t blocklen;
@@ -85,7 +85,7 @@ dev_get_blocklen(int fd)
 }
 
 uint64_t
-file_get_size(int fd)
+spdk_file_get_size(int fd)
 {
 	struct stat st;