diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 53 |
1 files changed, 28 insertions, 25 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 8f5ad75..ddf9394 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -601,9 +601,9 @@ static void qcow2_add_check_result(BdrvCheckResult *out, } } -static int coroutine_fn qcow2_co_check_locked(BlockDriverState *bs, - BdrvCheckResult *result, - BdrvCheckMode fix) +static int coroutine_fn GRAPH_RDLOCK +qcow2_co_check_locked(BlockDriverState *bs, BdrvCheckResult *result, + BdrvCheckMode fix) { BdrvCheckResult snapshot_res = {}; BdrvCheckResult refcount_res = {}; @@ -640,9 +640,9 @@ static int coroutine_fn qcow2_co_check_locked(BlockDriverState *bs, return ret; } -static int coroutine_fn qcow2_co_check(BlockDriverState *bs, - BdrvCheckResult *result, - BdrvCheckMode fix) +static int coroutine_fn GRAPH_RDLOCK +qcow2_co_check(BlockDriverState *bs, BdrvCheckResult *result, + BdrvCheckMode fix) { BDRVQcow2State *s = bs->opaque; int ret; @@ -1294,9 +1294,9 @@ static int validate_compression_type(BDRVQcow2State *s, Error **errp) } /* Called with s->lock held. */ -static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options, - int flags, bool open_data_file, - Error **errp) +static int coroutine_fn GRAPH_RDLOCK +qcow2_do_open(BlockDriverState *bs, QDict *options, int flags, + bool open_data_file, Error **errp) { ERRP_GUARD(); BDRVQcow2State *s = bs->opaque; @@ -1890,6 +1890,8 @@ static void coroutine_fn qcow2_open_entry(void *opaque) QCow2OpenCo *qoc = opaque; BDRVQcow2State *s = qoc->bs->opaque; + assume_graph_lock(); /* FIXME */ + qemu_co_mutex_lock(&s->lock); qoc->ret = qcow2_do_open(qoc->bs, qoc->options, qoc->flags, true, qoc->errp); @@ -2169,7 +2171,7 @@ out: return ret; } -static coroutine_fn int +static int coroutine_fn GRAPH_RDLOCK qcow2_co_preadv_encrypted(BlockDriverState *bs, uint64_t host_offset, uint64_t offset, @@ -2270,12 +2272,10 @@ static coroutine_fn int qcow2_add_task(BlockDriverState *bs, return 0; } -static coroutine_fn int qcow2_co_preadv_task(BlockDriverState *bs, - QCow2SubclusterType subc_type, - uint64_t host_offset, - uint64_t offset, uint64_t bytes, - QEMUIOVector *qiov, - size_t qiov_offset) +static int coroutine_fn GRAPH_RDLOCK +qcow2_co_preadv_task(BlockDriverState *bs, QCow2SubclusterType subc_type, + uint64_t host_offset, uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, size_t qiov_offset) { BDRVQcow2State *s = bs->opaque; @@ -2314,7 +2314,11 @@ static coroutine_fn int qcow2_co_preadv_task(BlockDriverState *bs, g_assert_not_reached(); } -static coroutine_fn int qcow2_co_preadv_task_entry(AioTask *task) +/* + * This function can count as GRAPH_RDLOCK because qcow2_co_preadv_part() holds + * the graph lock and keeps it until this coroutine has terminated. + */ +static int coroutine_fn GRAPH_RDLOCK qcow2_co_preadv_task_entry(AioTask *task) { Qcow2AioTask *t = container_of(task, Qcow2AioTask, task); @@ -2325,11 +2329,10 @@ static coroutine_fn int qcow2_co_preadv_task_entry(AioTask *task) t->qiov, t->qiov_offset); } -static coroutine_fn int qcow2_co_preadv_part(BlockDriverState *bs, - int64_t offset, int64_t bytes, - QEMUIOVector *qiov, - size_t qiov_offset, - BdrvRequestFlags flags) +static int coroutine_fn GRAPH_RDLOCK +qcow2_co_preadv_part(BlockDriverState *bs, int64_t offset, int64_t bytes, + QEMUIOVector *qiov, size_t qiov_offset, + BdrvRequestFlags flags) { BDRVQcow2State *s = bs->opaque; int ret = 0; @@ -2774,8 +2777,8 @@ static void qcow2_close(BlockDriverState *bs) qcow2_do_close(bs, true); } -static void coroutine_fn qcow2_co_invalidate_cache(BlockDriverState *bs, - Error **errp) +static void coroutine_fn GRAPH_RDLOCK +qcow2_co_invalidate_cache(BlockDriverState *bs, Error **errp) { ERRP_GUARD(); BDRVQcow2State *s = bs->opaque; @@ -4737,7 +4740,7 @@ qcow2_co_pwritev_compressed_part(BlockDriverState *bs, return ret; } -static int coroutine_fn +static int coroutine_fn GRAPH_RDLOCK qcow2_co_preadv_compressed(BlockDriverState *bs, uint64_t l2_entry, uint64_t offset, |