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block: Convert bdrv_debug_event() to co_wrapper_mixed

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bdrv_debug_event() is categorized as an I/O function, and it currently
doesn't run in a coroutine. We should let it take a graph rdlock since
it traverses the block nodes graph, which however is only possible in a
coroutine.

Therefore turn it into a co_wrapper_mixed to move the actual function
into a coroutine where the lock can be taken.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230113204212.359076-14-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Emanuele Giuseppe Esposito 2023-01-13 21:42:11 +01:00 • committed by Kevin Wolf
parent 2c75261cc2
commit c834dc0586
5 changed files with 23 additions and 18 deletions
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3
include/block/block_int-common.h
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@ -725,7 +725,8 @@ struct BlockDriver {
int coroutine_fn GRAPH_RDLOCK_PTR (*bdrv_co_check)(
BlockDriverState *bs, BdrvCheckResult *result, BdrvCheckMode fix);
void (*bdrv_debug_event)(BlockDriverState *bs, BlkdebugEvent event);
void coroutine_fn (*bdrv_co_debug_event)(BlockDriverState *bs,
BlkdebugEvent event);
/* io queue for linux-aio */
void coroutine_fn (*bdrv_co_io_plug)(BlockDriverState *bs);