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[PATCH v2 06/10] block: Convert bdrv_block_device_info into co_wrapper
From: |
Fabiano Rosas |
Subject: |
[PATCH v2 06/10] block: Convert bdrv_block_device_info into co_wrapper |
Date: |
Fri, 9 Jun 2023 17:19:06 -0300 |
We're converting callers of bdrv_get_allocated_file_size() to run in
coroutines because that function will be made asynchronous when called
(indirectly) from the QMP dispatcher.
This function is a candidate because it calls bdrv_query_image_info()
-> bdrv_do_query_node_info() -> bdrv_get_allocated_file_size().
It is safe to turn this is a coroutine because the code it calls is
made up of either simple accessors and string manipulation functions
[1] or it has already been determined to be safe [2].
1) bdrv_refresh_filename(), bdrv_is_read_only(),
blk_enable_write_cache(), bdrv_cow_bs(), blk_get_public(),
throttle_group_get_name(), bdrv_write_threshold_get(),
bdrv_query_dirty_bitmaps(), throttle_group_get_config(),
bdrv_filter_or_cow_bs(), bdrv_skip_implicit_filters()
2) bdrv_do_query_node_info() (see previous commit);
Signed-off-by: Fabiano Rosas <farosas@suse.de>
---
block/qapi.c | 8 ++++----
include/block/qapi.h | 12 ++++++++----
2 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/block/qapi.c b/block/qapi.c
index a2e71edaff..20660e15d6 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -41,10 +41,10 @@
#include "qemu/qemu-print.h"
#include "sysemu/block-backend.h"
-BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
- BlockDriverState *bs,
- bool flat,
- Error **errp)
+BlockDeviceInfo *coroutine_fn bdrv_co_block_device_info(BlockBackend *blk,
+ BlockDriverState *bs,
+ bool flat,
+ Error **errp)
{
ImageInfo **p_image_info;
ImageInfo *backing_info;
diff --git a/include/block/qapi.h b/include/block/qapi.h
index 7035bcd1ae..5cb0202791 100644
--- a/include/block/qapi.h
+++ b/include/block/qapi.h
@@ -30,10 +30,14 @@
#include "block/snapshot.h"
#include "qapi/qapi-types-block-core.h"
-BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
- BlockDriverState *bs,
- bool flat,
- Error **errp);
+BlockDeviceInfo *coroutine_fn bdrv_co_block_device_info(BlockBackend *blk,
+ BlockDriverState *bs,
+ bool flat,
+ Error **errp);
+BlockDeviceInfo *co_wrapper bdrv_block_device_info(BlockBackend *blk,
+ BlockDriverState *bs,
+ bool flat,
+ Error **errp);
int bdrv_query_snapshot_info_list(BlockDriverState *bs,
SnapshotInfoList **p_list,
Error **errp);
--
2.35.3
- [PATCH v2 00/10] block: Make raw_co_get_allocated_file_size asynchronous, Fabiano Rosas, 2023/06/09
- [PATCH v2 01/10] block: Remove bdrv_query_block_node_info, Fabiano Rosas, 2023/06/09
- [PATCH v2 02/10] block: Remove unnecessary variable in bdrv_block_device_info, Fabiano Rosas, 2023/06/09
- [PATCH v2 03/10] block: Allow the wrapper script to see functions declared in qapi.h, Fabiano Rosas, 2023/06/09
- [PATCH v2 04/10] block: Temporarily mark bdrv_co_get_allocated_file_size as mixed, Fabiano Rosas, 2023/06/09
- [PATCH v2 05/10] block: Convert bdrv_query_block_graph_info to coroutine, Fabiano Rosas, 2023/06/09
- [PATCH v2 06/10] block: Convert bdrv_block_device_info into co_wrapper,
Fabiano Rosas <=
- [PATCH v2 09/10] block: Convert qmp_query_block() to coroutine_fn, Fabiano Rosas, 2023/06/09
- [PATCH v2 08/10] block: Don't query all block devices at hmp_nbd_server_start, Fabiano Rosas, 2023/06/09
- [PATCH v2 07/10] block: Convert qmp_query_named_block_nodes to coroutine, Fabiano Rosas, 2023/06/09
- [PATCH v2 10/10] block: Add a thread-pool version of fstat, Fabiano Rosas, 2023/06/09