All callers are already GRAPH_RDLOCK, so just add the annotation and
remove assume_graph_lock().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/io.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/block/io.c b/block/io.c
index 4ea19a37e6..a56e565b12 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1672,8 +1672,9 @@ fail:
     return ret;
 }
 
-static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
-    int64_t offset, int64_t bytes, BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+bdrv_co_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                         BdrvRequestFlags flags)
 {
     BlockDriver *drv = bs->drv;
     QEMUIOVector qiov;
@@ -1683,8 +1684,6 @@ static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
     int head = 0;
     int tail = 0;
 
-    assume_graph_lock(); /* FIXME */
-
     int64_t max_write_zeroes = MIN_NON_ZERO(bs->bl.max_pwrite_zeroes,
                                             INT64_MAX);
     int alignment = MAX(bs->bl.pwrite_zeroes_alignment,
-- 
2.38.1