commit 0b9fd3f467dc5ac041fa014cd28c949b25b87d25
author Fam Zheng <famz@redhat.com> Tue Jul 10 14:31:17 2018 +0800
committer Kevin Wolf <kwolf@redhat.com> Tue Jul 10 16:01:52 2018 +0200
tree dad799a3301d7ae3c789bf810518b889bf67f980
parent ecc983a507bec9d3130434702d7031bfd372ba74

block: Use BdrvChild to discard

Other I/O functions are already using a BdrvChild pointer in the API, so
make discard do the same. It makes it possible to initiate the same
permission checks before doing I/O, and much easier to share the
helper functions for this, which will be added and used by write,
truncate and copy range paths.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block/blkreplay.c

diff --git a/block/blkreplay.c b/block/blkreplay.c
index b016dbe..766150a 100755
--- a/block/blkreplay.c
+++ b/block/blkreplay.c
@@ -113,7 +113,7 @@
                                               int64_t offset, int bytes)
 {
     uint64_t reqid = blkreplay_next_id();
-    int ret = bdrv_co_pdiscard(bs->file->bs, offset, bytes);
+    int ret = bdrv_co_pdiscard(bs->file, offset, bytes);
     block_request_create(reqid, bs, qemu_coroutine_self());
     qemu_coroutine_yield();