diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2023-09-29 16:51:39 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-10-12 16:31:33 +0200 |
| commit | 2b3912f1350971fbc2c04d986a1d0c60ae757c78 (patch) | |
| tree | 968e32867ca0d1a1c3579adb014e07595d4ba1aa /blockdev.c | |
| parent | 0e6bad1f2171385ec3ab7b9721dacfdb7dda70d7 (diff) | |
block: Mark bdrv_first_blk() and bdrv_is_root_node() GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_first_blk() and bdrv_is_root_node() need to hold a reader lock
for the graph. These functions are the only functions in block-backend.c
that access the parent list of a node.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-5-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/blockdev.c b/blockdev.c index 325b7a3bef..b6b7c44288 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1041,6 +1041,8 @@ static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) BlockDriverState *bs; AioContext *aio_context; + GRAPH_RDLOCK_GUARD_MAINLOOP(); + bs = bdrv_lookup_bs(name, name, errp); if (bs == NULL) { return NULL; @@ -3509,6 +3511,7 @@ void qmp_blockdev_del(const char *node_name, Error **errp) BlockDriverState *bs; GLOBAL_STATE_CODE(); + GRAPH_RDLOCK_GUARD_MAINLOOP(); bs = bdrv_find_node(node_name); if (!bs) { @@ -3636,6 +3639,8 @@ void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, AioContext *new_context; BlockDriverState *bs; + GRAPH_RDLOCK_GUARD_MAINLOOP(); + bs = bdrv_find_node(node_name); if (!bs) { error_setg(errp, "Failed to find node with node-name='%s'", node_name); |