[PATCH 4/5] block: move some mirror and stream handlers to coroutine

[Vladimir Sementsov-Ogievskiy]

We are going to use coroutine mutex to protect intersection of these
graph modifying things. Move them to coroutine now.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/coroutines.h | 11 +++++++++++
 block/mirror.c     |  5 +++--
 block/stream.c     |  5 +++--
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/block/coroutines.h b/block/coroutines.h
index 4cfb4946e6..aa60747b2f 100644
--- a/block/coroutines.h
+++ b/block/coroutines.h
@@ -26,6 +26,7 @@
 #define BLOCK_COROUTINES_INT_H
 
 #include "block/block_int.h"
+#include "sysemu/block-backend.h"
 
 int coroutine_fn bdrv_co_check(BlockDriverState *bs,
                                BdrvCheckResult *res, BdrvCheckMode fix);
@@ -66,4 +67,14 @@ int coroutine_fn bdrv_co_readv_vmstate(BlockDriverState *bs,
 int coroutine_fn bdrv_co_writev_vmstate(BlockDriverState *bs,
                                         QEMUIOVector *qiov, int64_t pos);
 
+void generated_co_wrapper stream_clean(Job *job);
+void coroutine_fn stream_co_clean(Job *job);
+int generated_co_wrapper stream_prepare(Job *job);
+int coroutine_fn stream_co_prepare(Job *job);
+
+void generated_co_wrapper mirror_complete(Job *job, Error **errp);
+void coroutine_fn mirror_co_complete(Job *job, Error **errp);
+int generated_co_wrapper mirror_exit_common(Job *job);
+int coroutine_fn mirror_co_exit_common(Job *job);
+
 #endif /* BLOCK_COROUTINES_INT_H */
diff --git a/block/mirror.c b/block/mirror.c
index 8e1ad6eceb..91e98b2349 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -18,6 +18,7 @@
 #include "trace.h"
 #include "block/blockjob_int.h"
 #include "block/block_int.h"
+#include "block/coroutines.h"
 #include "sysemu/block-backend.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
@@ -625,7 +626,7 @@ static void coroutine_fn 
mirror_wait_for_all_io(MirrorBlockJob *s)
  * for .prepare, returns 0 on success and -errno on failure.
  * for .abort cases, denoted by abort = true, MUST return 0.
  */
-static int mirror_exit_common(Job *job)
+int coroutine_fn mirror_co_exit_common(Job *job)
 {
     MirrorBlockJob *s = container_of(job, MirrorBlockJob, common.job);
     BlockJob *bjob = &s->common;
@@ -1103,7 +1104,7 @@ immediate_exit:
     return ret;
 }
 
-static void mirror_complete(Job *job, Error **errp)
+void coroutine_fn mirror_co_complete(Job *job, Error **errp)
 {
     MirrorBlockJob *s = container_of(job, MirrorBlockJob, common.job);
     BlockDriverState *target;
diff --git a/block/stream.c b/block/stream.c
index 236384f2f7..8a4b88b223 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -15,6 +15,7 @@
 #include "trace.h"
 #include "block/block_int.h"
 #include "block/blockjob_int.h"
+#include "block/coroutines.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
 #include "qemu/ratelimit.h"
@@ -58,7 +59,7 @@ static void stream_abort(Job *job)
     }
 }
 
-static int stream_prepare(Job *job)
+int coroutine_fn stream_co_prepare(Job *job)
 {
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
     BlockJob *bjob = &s->common;
@@ -90,7 +91,7 @@ static int stream_prepare(Job *job)
     return ret;
 }
 
-static void stream_clean(Job *job)
+void coroutine_fn stream_co_clean(Job *job)
 {
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
     BlockJob *bjob = &s->common;
-- 
2.21.3