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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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7
block/null.c
View file

@ -265,7 +265,8 @@ static void null_refresh_filename(BlockDriverState *bs)
bs->drv->format_name);
}
static int64_t null_allocated_file_size(BlockDriverState *bs)
static int64_t coroutine_fn
null_co_get_allocated_file_size(BlockDriverState *bs)
{
return 0;
}
@ -285,7 +286,7 @@ static BlockDriver bdrv_null_co = {
.bdrv_file_open = null_file_open,
.bdrv_parse_filename = null_co_parse_filename,
.bdrv_co_getlength = null_co_getlength,
.bdrv_get_allocated_file_size = null_allocated_file_size,
.bdrv_co_get_allocated_file_size = null_co_get_allocated_file_size,
.bdrv_co_preadv = null_co_preadv,
.bdrv_co_pwritev = null_co_pwritev,
@ -306,7 +307,7 @@ static BlockDriver bdrv_null_aio = {
.bdrv_file_open = null_file_open,
.bdrv_parse_filename = null_aio_parse_filename,
.bdrv_co_getlength = null_co_getlength,
.bdrv_get_allocated_file_size = null_allocated_file_size,
.bdrv_co_get_allocated_file_size = null_co_get_allocated_file_size,
.bdrv_aio_preadv = null_aio_preadv,
.bdrv_aio_pwritev = null_aio_pwritev,