Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- virtio-blk: Multiqueue support (configurable iothread per queue)
- Made NBD export and hw/scsi thread-safe without AioContext lock
- Fix crash when loading snapshot on inactive node

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* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (33 commits)
  virtio-blk: add iothread-vq-mapping parameter
  qdev: add IOThreadVirtQueueMappingList property type
  qdev-properties: alias all object class properties
  string-output-visitor: show structs as "<omitted>"
  block-coroutine-wrapper: use qemu_get_current_aio_context()
  block: remove outdated AioContext locking comments
  job: remove outdated AioContext locking comments
  scsi: remove outdated AioContext lock comment
  docs: remove AioContext lock from IOThread docs
  aio: remove aio_context_acquire()/aio_context_release() API
  aio-wait: draw equivalence between AIO_WAIT_WHILE() and AIO_WAIT_WHILE_UNLOCKED()
  scsi: remove AioContext locking
  block: remove bdrv_co_lock()
  block: remove AioContext locking
  graph-lock: remove AioContext locking
  aio: make aio_context_acquire()/aio_context_release() a no-op
  tests: remove aio_context_acquire() tests
  scsi: assert that callbacks run in the correct AioContext
  virtio-scsi: replace AioContext lock with tmf_bh_lock
  dma-helpers: don't lock AioContext in dma_blk_cb()
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/scripts/block-coroutine-wrapper.py b/scripts/block-coroutine-wrapper.py
index a38e583..dbbde99 100644
--- a/scripts/block-coroutine-wrapper.py
+++ b/scripts/block-coroutine-wrapper.py
@@ -92,8 +92,6 @@ class FuncDecl:
                                  f"{self.name}")
             self.target_name = f'{subsystem}_{subname}'
 
-        self.ctx = self.gen_ctx()
-
         self.get_result = 's->ret = '
         self.ret = 'return s.ret;'
         self.co_ret = 'return '
@@ -167,7 +165,7 @@ def create_mixed_wrapper(func: FuncDecl) -> str:
         {func.co_ret}{name}({ func.gen_list('{name}') });
     }} else {{
         {struct_name} s = {{
-            .poll_state.ctx = {func.ctx},
+            .poll_state.ctx = qemu_get_current_aio_context(),
             .poll_state.in_progress = true,
 
 { func.gen_block('            .{name} = {name},') }
@@ -191,7 +189,7 @@ def create_co_wrapper(func: FuncDecl) -> str:
 {func.return_type} {func.name}({ func.gen_list('{decl}') })
 {{
     {struct_name} s = {{
-        .poll_state.ctx = {func.ctx},
+        .poll_state.ctx = qemu_get_current_aio_context(),
         .poll_state.in_progress = true,
 
 { func.gen_block('        .{name} = {name},') }
@@ -261,8 +259,8 @@ def gen_no_co_wrapper(func: FuncDecl) -> str:
         graph_lock='    bdrv_graph_rdlock_main_loop();'
         graph_unlock='    bdrv_graph_rdunlock_main_loop();'
     elif func.graph_wrlock:
-        graph_lock='    bdrv_graph_wrlock(NULL);'
-        graph_unlock='    bdrv_graph_wrunlock(NULL);'
+        graph_lock='    bdrv_graph_wrlock();'
+        graph_unlock='    bdrv_graph_wrunlock();'
 
     return f"""\
 /*
@@ -278,12 +276,9 @@ typedef struct {struct_name} {{
 static void {name}_bh(void *opaque)
 {{
     {struct_name} *s = opaque;
-    AioContext *ctx = {func.gen_ctx('s->')};
 
 {graph_lock}
-    aio_context_acquire(ctx);
     {func.get_result}{name}({ func.gen_list('s->{name}') });
-    aio_context_release(ctx);
 {graph_unlock}
 
     aio_co_wake(s->co);