[PATCH v2] include/block.h: remove outdated comment

[Emanuele Giuseppe Esposito <eesposit@redhat.com>]

There are a couple of errors in bdrv_drained_begin header comment:
- block_job_pause does not exist anymore, it has been replaced
  with job_pause in b15de82867
- job_pause is automatically invoked as a .drained_begin callback
  (child_job_drained_begin) by the child_job BdrvChildClass struct
  in blockjob.c. So no additional pause should be required.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
v2:
+ add "block jobs" to the external request sources

 include/block/block.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/block/block.h b/include/block/block.h
index 3477290f9a..de40758e71 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -749,9 +749,7 @@ bool bdrv_drain_poll(BlockDriverState *bs, bool recursive,
  * bdrv_drained_begin:
  *
  * Begin a quiesced section for exclusive access to the BDS, by disabling
- * external request sources including NBD server and device model. Note that
- * this doesn't block timers or coroutines from submitting more requests, which
- * means block_job_pause is still necessary.
+ * external request sources including NBD server, block jobs, and device model.
  *
  * This function can be recursive.
  */
-- 
2.31.1