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block: Mark bdrv_has_zero_init() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_has_zero_init() need to hold a reader lock for the graph because
it calls bdrv_filter_bs(), which accesses bs->file/backing.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-3-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-10-27 17:53:11 +02:00
parent 221caadcc5
commit 067179868e
11 changed files with 22 additions and 12 deletions
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2
include/block/block_int-common.h
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@ -349,7 +349,7 @@ struct BlockDriver {
* Returns 1 if newly created images are guaranteed to contain only
* zeros, 0 otherwise.
*/
int (*bdrv_has_zero_init)(BlockDriverState *bs);
int GRAPH_RDLOCK_PTR (*bdrv_has_zero_init)(BlockDriverState *bs);
/*
* Remove fd handlers, timers, and other event loop callbacks so the event