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block: Convert bdrv_get_allocated_file_size() to co_wrapper

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bdrv_get_allocated_file_size() 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 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: <20230113204212.359076-10-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 21:42:07 +01:00 • committed by Kevin Wolf
parent bd53086e82
commit 82618d7bc3
10 changed files with 39 additions and 38 deletions
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2
block/qcow2-refcount.c
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@ -3720,7 +3720,7 @@ int coroutine_fn qcow2_detect_metadata_preallocation(BlockDriverState *bs)
return file_length;
}
real_allocation = bdrv_get_allocated_file_size(bs->file->bs);
real_allocation = bdrv_co_get_allocated_file_size(bs->file->bs);
if (real_allocation < 0) {
return real_allocation;
}