[PATCH 4/6] block: blk_root(): return non-const pointer

[Vladimir Sementsov-Ogievskiy]

In the following patch we'll want to pass blk children to block-copy.
Const pointers are not enough. So, return non const pointer from
blk_root().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 include/sysemu/block-backend.h | 2 +-
 block/block-backend.c          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index aec05ef0a0..9c755c38b1 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -266,7 +266,7 @@ int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, 
int64_t off_in,
                                    int bytes, BdrvRequestFlags read_flags,
                                    BdrvRequestFlags write_flags);
 
-const BdrvChild *blk_root(BlockBackend *blk);
+BdrvChild *blk_root(BlockBackend *blk);
 
 int blk_make_empty(BlockBackend *blk, Error **errp);
 
diff --git a/block/block-backend.c b/block/block-backend.c
index b1abc6f3e6..758cd8507e 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2452,7 +2452,7 @@ int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, 
int64_t off_in,
                               bytes, read_flags, write_flags);
 }
 
-const BdrvChild *blk_root(BlockBackend *blk)
+BdrvChild *blk_root(BlockBackend *blk)
 {
     return blk->root;
 }
-- 
2.29.2