Merge remote-tracking branch 'stefanha/block-next' into staging

# By Stefan Hajnoczi
# Via Stefan Hajnoczi
* stefanha/block-next:
  aio: drop io_flush argument
  tests: drop event_active_cb()
  thread-pool: drop thread_pool_active()
  dataplane/virtio-blk: drop flush_true() and flush_io()
  block/ssh: drop return_true()
  block/sheepdog: drop have_co_req() and aio_flush_request()
  block/rbd: drop qemu_rbd_aio_flush_cb()
  block/nbd: drop nbd_have_request()
  block/linux-aio: drop qemu_laio_completion_cb()
  block/iscsi: drop iscsi_process_flush()
  block/gluster: drop qemu_gluster_aio_flush_cb()
  block/curl: drop curl_aio_flush()
  aio: stop using .io_flush()
  tests: adjust test-thread-pool to new aio_poll() semantics
  tests: adjust test-aio to new aio_poll() semantics
  dataplane/virtio-blk: check exit conditions before aio_poll()
  block: stop relying on io_flush() in bdrv_drain_all()
  block: ensure bdrv_drain_all() works during bdrv_delete()

Message-id: 1376921877-9576-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>

2 files changed, 54 insertions, 52 deletions

diff --git a/tests/test-aio.c b/tests/test-aio.c
index c173870..1ab5637 100644
--- a/tests/test-aio.c
+++ b/tests/test-aio.c
@@ -15,6 +15,13 @@
 
 AioContext *ctx;
 
+typedef struct {
+    EventNotifier e;
+    int n;
+    int active;
+    bool auto_set;
+} EventNotifierTestData;
+
 /* Wait until there are no more BHs or AIO requests */
 static void wait_for_aio(void)
 {
@@ -23,6 +30,14 @@ static void wait_for_aio(void)
     }
 }
 
+/* Wait until event notifier becomes inactive */
+static void wait_until_inactive(EventNotifierTestData *data)
+{
+    while (data->active > 0) {
+        aio_poll(ctx, true);
+    }
+}
+
 /* Simple callbacks for testing.  */
 
 typedef struct {
@@ -50,19 +65,6 @@ static void bh_delete_cb(void *opaque)
     }
 }
 
-typedef struct {
-    EventNotifier e;
-    int n;
-    int active;
-    bool auto_set;
-} EventNotifierTestData;
-
-static int event_active_cb(EventNotifier *e)
-{
-    EventNotifierTestData *data = container_of(e, EventNotifierTestData, e);
-    return data->active > 0;
-}
-
 static void event_ready_cb(EventNotifier *e)
 {
     EventNotifierTestData *data = container_of(e, EventNotifierTestData, e);
@@ -231,11 +233,11 @@ static void test_set_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 0 };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 0);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 0);
     event_notifier_cleanup(&data.e);
@@ -245,8 +247,8 @@ static void test_wait_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 1 };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
-    g_assert(aio_poll(ctx, false));
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
+    g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 0);
     g_assert_cmpint(data.active, ==, 1);
 
@@ -259,7 +261,7 @@ static void test_wait_event_notifier(void)
     g_assert_cmpint(data.n, ==, 1);
     g_assert_cmpint(data.active, ==, 0);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 1);
 
@@ -270,8 +272,8 @@ static void test_flush_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
-    g_assert(aio_poll(ctx, false));
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
+    g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 0);
     g_assert_cmpint(data.active, ==, 10);
 
@@ -281,12 +283,12 @@ static void test_flush_event_notifier(void)
     g_assert_cmpint(data.active, ==, 9);
     g_assert(aio_poll(ctx, false));
 
-    wait_for_aio();
+    wait_until_inactive(&data);
     g_assert_cmpint(data.n, ==, 10);
     g_assert_cmpint(data.active, ==, 0);
     g_assert(!aio_poll(ctx, false));
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     g_assert(!aio_poll(ctx, false));
     event_notifier_cleanup(&data.e);
 }
@@ -297,7 +299,7 @@ static void test_wait_event_notifier_noflush(void)
     EventNotifierTestData dummy = { .n = 0, .active = 1 };
 
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, NULL);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
 
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 0);
@@ -305,35 +307,35 @@ static void test_wait_event_notifier_noflush(void)
     /* Until there is an active descriptor, aio_poll may or may not call
      * event_ready_cb.  Still, it must not block.  */
     event_notifier_set(&data.e);
-    g_assert(!aio_poll(ctx, true));
+    g_assert(aio_poll(ctx, true));
     data.n = 0;
 
     /* An active event notifier forces aio_poll to look at EventNotifiers.  */
     event_notifier_init(&dummy.e, false);
-    aio_set_event_notifier(ctx, &dummy.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &dummy.e, event_ready_cb);
 
     event_notifier_set(&data.e);
     g_assert(aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 1);
-    g_assert(aio_poll(ctx, false));
+    g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 1);
 
     event_notifier_set(&data.e);
     g_assert(aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 2);
-    g_assert(aio_poll(ctx, false));
+    g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 2);
 
     event_notifier_set(&dummy.e);
-    wait_for_aio();
+    wait_until_inactive(&dummy);
     g_assert_cmpint(data.n, ==, 2);
     g_assert_cmpint(dummy.n, ==, 1);
     g_assert_cmpint(dummy.active, ==, 0);
 
-    aio_set_event_notifier(ctx, &dummy.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &dummy.e, NULL);
     event_notifier_cleanup(&dummy.e);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     g_assert(!aio_poll(ctx, false));
     g_assert_cmpint(data.n, ==, 2);
 
@@ -513,11 +515,11 @@ static void test_source_set_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 0 };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
     while (g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 0);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     while (g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 0);
     event_notifier_cleanup(&data.e);
@@ -527,7 +529,7 @@ static void test_source_wait_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 1 };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
     g_assert(g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 0);
     g_assert_cmpint(data.active, ==, 1);
@@ -541,7 +543,7 @@ static void test_source_wait_event_notifier(void)
     g_assert_cmpint(data.n, ==, 1);
     g_assert_cmpint(data.active, ==, 0);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     while (g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 1);
 
@@ -552,7 +554,7 @@ static void test_source_flush_event_notifier(void)
 {
     EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
     g_assert(g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 0);
     g_assert_cmpint(data.active, ==, 10);
@@ -568,7 +570,7 @@ static void test_source_flush_event_notifier(void)
     g_assert_cmpint(data.active, ==, 0);
     g_assert(!g_main_context_iteration(NULL, false));
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     while (g_main_context_iteration(NULL, false));
     event_notifier_cleanup(&data.e);
 }
@@ -579,7 +581,7 @@ static void test_source_wait_event_notifier_noflush(void)
     EventNotifierTestData dummy = { .n = 0, .active = 1 };
 
     event_notifier_init(&data.e, false);
-    aio_set_event_notifier(ctx, &data.e, event_ready_cb, NULL);
+    aio_set_event_notifier(ctx, &data.e, event_ready_cb);
 
     while (g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 0);
@@ -592,7 +594,7 @@ static void test_source_wait_event_notifier_noflush(void)
 
     /* An active event notifier forces aio_poll to look at EventNotifiers.  */
     event_notifier_init(&dummy.e, false);
-    aio_set_event_notifier(ctx, &dummy.e, event_ready_cb, event_active_cb);
+    aio_set_event_notifier(ctx, &dummy.e, event_ready_cb);
 
     event_notifier_set(&data.e);
     g_assert(g_main_context_iteration(NULL, false));
@@ -612,10 +614,10 @@ static void test_source_wait_event_notifier_noflush(void)
     g_assert_cmpint(dummy.n, ==, 1);
     g_assert_cmpint(dummy.active, ==, 0);
 
-    aio_set_event_notifier(ctx, &dummy.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &dummy.e, NULL);
     event_notifier_cleanup(&dummy.e);
 
-    aio_set_event_notifier(ctx, &data.e, NULL, NULL);
+    aio_set_event_notifier(ctx, &data.e, NULL);
     while (g_main_context_iteration(NULL, false));
     g_assert_cmpint(data.n, ==, 2);
 
diff --git a/tests/test-thread-pool.c b/tests/test-thread-pool.c
index b62338f..8188d1a 100644
--- a/tests/test-thread-pool.c
+++ b/tests/test-thread-pool.c
@@ -40,19 +40,13 @@ static void done_cb(void *opaque, int ret)
     active--;
 }
 
-/* Wait until all aio and bh activity has finished */
-static void qemu_aio_wait_all(void)
-{
-    while (aio_poll(ctx, true)) {
-        /* Do nothing */
-    }
-}
-
 static void test_submit(void)
 {
     WorkerTestData data = { .n = 0 };
     thread_pool_submit(pool, worker_cb, &data);
-    qemu_aio_wait_all();
+    while (data.n == 0) {
+        aio_poll(ctx, true);
+    }
     g_assert_cmpint(data.n, ==, 1);
 }
 
@@ -65,7 +59,9 @@ static void test_submit_aio(void)
     /* The callbacks are not called until after the first wait.  */
     active = 1;
     g_assert_cmpint(data.ret, ==, -EINPROGRESS);
-    qemu_aio_wait_all();
+    while (data.ret == -EINPROGRESS) {
+        aio_poll(ctx, true);
+    }
     g_assert_cmpint(active, ==, 0);
     g_assert_cmpint(data.n, ==, 1);
     g_assert_cmpint(data.ret, ==, 0);
@@ -103,7 +99,9 @@ static void test_submit_co(void)
 
     /* qemu_aio_wait_all will execute the rest of the coroutine.  */
 
-    qemu_aio_wait_all();
+    while (data.ret == -EINPROGRESS) {
+        aio_poll(ctx, true);
+    }
 
     /* Back here after the coroutine has finished.  */
 
@@ -187,7 +185,9 @@ static void test_cancel(void)
     }
 
     /* Finish execution and execute any remaining callbacks.  */
-    qemu_aio_wait_all();
+    while (active > 0) {
+        aio_poll(ctx, true);
+    }
     g_assert_cmpint(active, ==, 0);
     for (i = 0; i < 100; i++) {
         if (data[i].n == 3) {