From 41574268b7e61ab98384ca7048f3fec862433401 Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Thu, 19 May 2016 17:05:50 -0600
Subject: [PATCH] block: Move BlockRequest type to io.c

I was thrown by the fact that the public type BlockRequest had
an anonymous union, but no obvious discriminator.  Turns out
that the only client of the second branch of the union was code
internal to io.c, now that commit 91c6e4b killed public
multiwrite, so move it into io.c and improve the comments.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1463699150-19445-1-git-send-email-eblake@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
---
 block/io.c            | 21 +++++++++++++++++++++
 include/block/block.h | 21 ---------------------
 2 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/block/io.c b/block/io.c
index e12f303..a2fba67 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1902,6 +1902,27 @@ void bdrv_aio_cancel_async(BlockAIOCB *acb)
 /**************************************************************/
 /* async block device emulation */
 
+typedef struct BlockRequest {
+    union {
+        /* Used during read, write, trim */
+        struct {
+            int64_t sector;
+            int nb_sectors;
+            int flags;
+            QEMUIOVector *qiov;
+        };
+        /* Used during ioctl */
+        struct {
+            int req;
+            void *buf;
+        };
+    };
+    BlockCompletionFunc *cb;
+    void *opaque;
+
+    int error;
+} BlockRequest;
+
 typedef struct BlockAIOCBCoroutine {
     BlockAIOCB common;
     BlockRequest req;
diff --git a/include/block/block.h b/include/block/block.h
index d6bb74d..3fd5043 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -320,27 +320,6 @@ BlockAIOCB *bdrv_aio_discard(BlockDriverState *bs,
 void bdrv_aio_cancel(BlockAIOCB *acb);
 void bdrv_aio_cancel_async(BlockAIOCB *acb);
 
-typedef struct BlockRequest {
-    /* Fields to be filled by caller */
-    union {
-        struct {
-            int64_t sector;
-            int nb_sectors;
-            int flags;
-            QEMUIOVector *qiov;
-        };
-        struct {
-            int req;
-            void *buf;
-        };
-    };
-    BlockCompletionFunc *cb;
-    void *opaque;
-
-    /* Filled by block layer */
-    int error;
-} BlockRequest;
-
 /* sg packet commands */
 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf);
 BlockAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
-- 
2.7.4