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Block layer patches

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- Re-enable the graph lock
 - More fixes to coroutine_fn marking
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Re-enable the graph lock
- More fixes to coroutine_fn marking

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* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (23 commits)
  block: use bdrv_co_debug_event in coroutine context
  block: use bdrv_co_getlength in coroutine context
  qcow2: mark more functions as coroutine_fns and GRAPH_RDLOCK
  vhdx: mark more functions as coroutine_fns and GRAPH_RDLOCK
  vmdk: mark more functions as coroutine_fns and GRAPH_RDLOCK
  dmg: mark more functions as coroutine_fns and GRAPH_RDLOCK
  cloop: mark more functions as coroutine_fns and GRAPH_RDLOCK
  block: mark another function as coroutine_fns and GRAPH_UNLOCKED
  bochs: mark more functions as coroutine_fns and GRAPH_RDLOCK
  vpc: mark more functions as coroutine_fns and GRAPH_RDLOCK
  qed: mark more functions as coroutine_fns and GRAPH_RDLOCK
  file-posix: remove incorrect coroutine_fn calls
  Revert "graph-lock: Disable locking for now"
  graph-lock: Unlock the AioContext while polling
  blockjob: Fix AioContext locking in block_job_add_bdrv()
  block: Fix AioContext locking in bdrv_open_backing_file()
  block: Fix AioContext locking in bdrv_open_inherit()
  block: Fix AioContext locking in bdrv_reopen_parse_file_or_backing()
  block: Fix AioContext locking in bdrv_attach_child_common()
  block: Fix AioContext locking in bdrv_open_child()
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-06-28 17:29:53 +02:00
commit 0eb8f90ede
30 changed files with 574 additions and 340 deletions
Download patch file Download diff file Expand all files Collapse all files

7
include/block/block-io.h
View file

@ -224,6 +224,13 @@ bdrv_co_debug_event(BlockDriverState *bs, BlkdebugEvent event);
void co_wrapper_mixed_bdrv_rdlock
bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event);
#define BLKDBG_CO_EVENT(child, evt) \
do { \
if (child) { \
bdrv_co_debug_event(child->bs, evt); \
} \
} while (0)
#define BLKDBG_EVENT(child, evt) \
do { \
if (child) { \

6
include/block/graph-lock.h
View file

@ -111,10 +111,12 @@ void unregister_aiocontext(AioContext *ctx);
* The wrlock can only be taken from the main loop, with BQL held, as only the
* main loop is allowed to modify the graph.
*
* If @bs is non-NULL, its AioContext is temporarily released.
*
* This function polls. Callers must not hold the lock of any AioContext other
* than the current one.
* than the current one and the one of @bs.
*/
void bdrv_graph_wrlock(void) TSA_ACQUIRE(graph_lock) TSA_NO_TSA;
void bdrv_graph_wrlock(BlockDriverState *bs) TSA_ACQUIRE(graph_lock) TSA_NO_TSA;
/*
* bdrv_graph_wrunlock: