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qcow2: mark various functions as coroutine_fn and GRAPH_RDLOCK

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Functions that can do I/O (including calling bdrv_is_allocated
and bdrv_block_status functions) are prime candidates for being
coroutine_fns.  Make the change for those that are themselves called
only from coroutine_fns.  Also annotate that they are called with the
graph rdlock taken, thus allowing them to call bdrv_co_*() functions
for I/O.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20230309084456.304669-9-pbonzini@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini
2023-03-09 09:44:55 +01:00
committed by Kevin Wolf
parent 10bf10a8e3
commit a39bae4ecd
6 changed files with 53 additions and 45 deletions
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block/qcow2-bitmap.c
+1 -1
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@@ -1221,7 +1221,7 @@ out:
}
/* Checks to see if it's safe to resize bitmaps */
int qcow2_truncate_bitmaps_check(BlockDriverState *bs, Error **errp)
int coroutine_fn qcow2_truncate_bitmaps_check(BlockDriverState *bs, Error **errp)
{
BDRVQcow2State *s = bs->opaque;
Qcow2BitmapList *bm_list;