[Qemu-devel] [PATCH v2 13/13] block: Don't check throttled reqs in bdrv_requests_pending()

[Kevin Wolf <kwolf@redhat.com>]

Checking whether there are throttled requests requires going to the
associated BlockBackend, which we want to avoid. All users of
bdrv_requests_pending() already call bdrv_parent_drained_begin() first,
which restarts all throttled requests, so no throttled requests can be
left here and this is removal of dead code.

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

diff --git a/block/io.c b/block/io.c
index b239e97..4224044 100644
--- a/block/io.c
+++ b/block/io.c
@@ -177,17 +177,10 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs)
 bool bdrv_requests_pending(BlockDriverState *bs)
 {
     BdrvChild *child;
-    BlockBackendPublic *blkp = bs->blk ? blk_get_public(bs->blk) : NULL;
 
     if (!QLIST_EMPTY(&bs->tracked_requests)) {
         return true;
     }
-    if (blkp && !qemu_co_queue_empty(&blkp->throttled_reqs[0])) {
-        return true;
-    }
-    if (blkp && !qemu_co_queue_empty(&blkp->throttled_reqs[1])) {
-        return true;
-    }
 
     QLIST_FOREACH(child, &bs->children, next) {
         if (bdrv_requests_pending(child->bs)) {
-- 
1.8.3.1