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From 0ace323e4037200dc16bda1d77bbdc4f2711a658 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Fri, 14 Sep 2018 10:55:03 +0200
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Subject: [PATCH 12/49] tests/test-bdrv-drain: bdrv_drain_all() works in
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coroutines now
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20180914105540.18077-6-kwolf@redhat.com>
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Patchwork-id: 82156
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 05/42] tests/test-bdrv-drain: bdrv_drain_all() works in coroutines now
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Bugzilla: 1601212
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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Since we use bdrv_do_drained_begin/end() for bdrv_drain_all_begin/end(),
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coroutine context is automatically left with a BH, preventing the
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deadlocks that made bdrv_drain_all*() unsafe in coroutine context. Now
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that we even removed the old polling code as dead code, it's obvious
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that it's compatible now.
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Enable the coroutine test cases for bdrv_drain_all().
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 6d0252f2f9cb49925deb1c41101462c9481dfc90)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/test-bdrv-drain.c | 16 ++++++++++++++--
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1 file changed, 14 insertions(+), 2 deletions(-)
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diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c
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index f1276a1..f5d85c9 100644
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--- a/tests/test-bdrv-drain.c
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+++ b/tests/test-bdrv-drain.c
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@@ -233,6 +233,11 @@ static void test_drv_cb_drain_subtree(void)
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test_drv_cb_common(BDRV_SUBTREE_DRAIN, true);
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}
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+static void test_drv_cb_co_drain_all(void)
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+{
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+ call_in_coroutine(test_drv_cb_drain_all);
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+}
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+
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static void test_drv_cb_co_drain(void)
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{
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call_in_coroutine(test_drv_cb_drain);
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@@ -289,6 +294,11 @@ static void test_quiesce_drain_subtree(void)
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test_quiesce_common(BDRV_SUBTREE_DRAIN, true);
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}
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+static void test_quiesce_co_drain_all(void)
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+{
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+ call_in_coroutine(test_quiesce_drain_all);
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+}
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+
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static void test_quiesce_co_drain(void)
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{
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call_in_coroutine(test_quiesce_drain);
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@@ -795,7 +805,8 @@ int main(int argc, char **argv)
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g_test_add_func("/bdrv-drain/driver-cb/drain_subtree",
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test_drv_cb_drain_subtree);
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- // XXX bdrv_drain_all() doesn't work in coroutine context
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+ g_test_add_func("/bdrv-drain/driver-cb/co/drain_all",
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+ test_drv_cb_co_drain_all);
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g_test_add_func("/bdrv-drain/driver-cb/co/drain", test_drv_cb_co_drain);
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g_test_add_func("/bdrv-drain/driver-cb/co/drain_subtree",
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test_drv_cb_co_drain_subtree);
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@@ -806,7 +817,8 @@ int main(int argc, char **argv)
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g_test_add_func("/bdrv-drain/quiesce/drain_subtree",
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test_quiesce_drain_subtree);
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- // XXX bdrv_drain_all() doesn't work in coroutine context
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+ g_test_add_func("/bdrv-drain/quiesce/co/drain_all",
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+ test_quiesce_co_drain_all);
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g_test_add_func("/bdrv-drain/quiesce/co/drain", test_quiesce_co_drain);
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g_test_add_func("/bdrv-drain/quiesce/co/drain_subtree",
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test_quiesce_co_drain_subtree);
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--
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1.8.3.1
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