X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;ds=sidebyside;f=backend.c;h=3a1df299fd80f920ee97d8f1ecb79b525726a838;hb=73cfb8a7da365c37253662477edb54ecc19575df;hp=3600319b233fb923fd214bea4179d436ae0f0f0e;hpb=e65a950ab73d7d91f267ad7f7b084d94e266fcb0;p=fio.git

diff --git a/backend.c b/backend.c
index 3600319b..3a1df299 100644
--- a/backend.c
+++ b/backend.c
@@ -67,6 +67,7 @@ unsigned int thread_number = 0;
 int shm_id = 0;
 int temp_stall_ts;
 unsigned long done_secs = 0;
+volatile int disk_util_exit = 0;
 
 #define PAGE_ALIGN(buf)	\
 	(char *) (((uintptr_t) (buf) + page_mask) & ~page_mask)
@@ -802,6 +803,7 @@ static int init_io_u(struct thread_data *td)
 	struct io_u *io_u;
 	unsigned int max_bs, min_write;
 	int cl_align, i, max_units;
+	int data_xfer = 1;
 	char *p;
 
 	max_units = td->o.iodepth;
@@ -811,6 +813,9 @@ static int init_io_u(struct thread_data *td)
 	td->orig_buffer_size = (unsigned long long) max_bs
 					* (unsigned long long) max_units;
 
+	if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td)))
+		data_xfer = 0;
+
 	if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
 		unsigned long bs;
 
@@ -823,7 +828,7 @@ static int init_io_u(struct thread_data *td)
 		return 1;
 	}
 
-	if (allocate_io_mem(td))
+	if (data_xfer && allocate_io_mem(td))
 		return 1;
 
 	if (td->o.odirect || td->o.mem_align ||
@@ -851,7 +856,7 @@ static int init_io_u(struct thread_data *td)
 		INIT_FLIST_HEAD(&io_u->list);
 		dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
 
-		if (!(td->io_ops->flags & FIO_NOIO)) {
+		if (data_xfer) {
 			io_u->buf = p;
 			dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
 
@@ -1617,6 +1622,13 @@ void wait_for_disk_thread_exit(void)
 	fio_mutex_down(disk_thread_mutex);
 }
 
+static void free_disk_util(void)
+{
+	disk_util_start_exit();
+	wait_for_disk_thread_exit();
+	disk_util_prune_entries();
+}
+
 static void *disk_thread_main(void *data)
 {
 	int ret = 0;