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block: Mark bdrv_parent_perms_conflict() and callers GRAPH_RDLOCK

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The function reads the parents list, so it needs to hold the graph lock.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230911094620.45040-14-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-09-11 11:46:12 +02:00
parent afdaeb9ea0
commit 3804e3cf54
9 changed files with 66 additions and 26 deletions
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8
include/block/block_int-global-state.h
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@ -212,8 +212,9 @@ void bdrv_get_cumulative_perm(BlockDriverState *bs, uint64_t *perm,
* bdrv_child_refresh_perms() instead and make the parent's
* .bdrv_child_perm() implementation return the correct values.
*/
int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared,
Error **errp);
int GRAPH_RDLOCK
bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared,
Error **errp);
/**
* Calls bs->drv->bdrv_child_perm() and updates the child's permission
@ -223,7 +224,8 @@ int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared,
* values than before, but which will not result in the block layer
* automatically refreshing the permissions.
*/
int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp);
int GRAPH_RDLOCK
bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp);
bool GRAPH_RDLOCK bdrv_recurse_can_replace(BlockDriverState *bs,
BlockDriverState *to_replace);