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block: Mark bdrv_co_eject/lock_medium() and callers GRAPH_RDLOCK

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This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_co_eject() and bdrv_co_lock_medium() need to hold a reader lock for
the graph.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230203152202.49054-20-kwolf@redhat.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf
2023-02-03 16:21:58 +01:00
parent c73ff92c9d
commit 79a292e5ec
7 changed files with 23 additions and 10 deletions
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block/block-backend.c
+2
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@@ -2013,6 +2013,7 @@ void coroutine_fn blk_co_lock_medium(BlockBackend *blk, bool locked)
{
BlockDriverState *bs = blk_bs(blk);
IO_CODE();
GRAPH_RDLOCK_GUARD();
if (bs) {
bdrv_co_lock_medium(bs, locked);
@@ -2024,6 +2025,7 @@ void coroutine_fn blk_co_eject(BlockBackend *blk, bool eject_flag)
BlockDriverState *bs = blk_bs(blk);
char *id;
IO_CODE();
GRAPH_RDLOCK_GUARD();
if (bs) {
bdrv_co_eject(bs, eject_flag);