[PATCH v4 2/5] blockdev: combine DriveBackupState and BlockdevBackupState

[Eric Blake <eblake@redhat.com>]

From: John Snow <jsnow@redhat.com>

They have the same fields -- rename it BlockJobActionState.

Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 blockdev.c | 30 ++++++++++++------------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 3848a9c8ab86..f177048a4fe8 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1668,11 +1668,11 @@ static void external_snapshot_clean(BlkActionState *common)
     aio_context_release(aio_context);
 }

-typedef struct DriveBackupState {
+typedef struct BlockJobActionState {
     BlkActionState common;
     BlockDriverState *bs;
     BlockJob *job;
-} DriveBackupState;
+} BlockJobActionState;

 static BlockJob *do_backup_common(BackupCommon *backup,
                                   BlockDriverState *bs,
@@ -1682,7 +1682,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,

 static void drive_backup_prepare(BlkActionState *common, Error **errp)
 {
-    DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     DriveBackup *backup;
     BlockDriverState *bs;
     BlockDriverState *target_bs;
@@ -1819,7 +1819,7 @@ out:

 static void drive_backup_commit(BlkActionState *common)
 {
-    DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     AioContext *aio_context;

     aio_context = bdrv_get_aio_context(state->bs);
@@ -1833,7 +1833,7 @@ static void drive_backup_commit(BlkActionState *common)

 static void drive_backup_abort(BlkActionState *common)
 {
-    DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);

     if (state->job) {
         AioContext *aio_context;
@@ -1849,7 +1849,7 @@ static void drive_backup_abort(BlkActionState *common)

 static void drive_backup_clean(BlkActionState *common)
 {
-    DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     AioContext *aio_context;

     if (!state->bs) {
@@ -1864,15 +1864,9 @@ static void drive_backup_clean(BlkActionState *common)
     aio_context_release(aio_context);
 }

-typedef struct BlockdevBackupState {
-    BlkActionState common;
-    BlockDriverState *bs;
-    BlockJob *job;
-} BlockdevBackupState;
-
 static void blockdev_backup_prepare(BlkActionState *common, Error **errp)
 {
-    BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     BlockdevBackup *backup;
     BlockDriverState *bs;
     BlockDriverState *target_bs;
@@ -1920,7 +1914,7 @@ static void blockdev_backup_prepare(BlkActionState *common, Error **errp)

 static void blockdev_backup_commit(BlkActionState *common)
 {
-    BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     AioContext *aio_context;

     aio_context = bdrv_get_aio_context(state->bs);
@@ -1934,7 +1928,7 @@ static void blockdev_backup_commit(BlkActionState *common)

 static void blockdev_backup_abort(BlkActionState *common)
 {
-    BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);

     if (state->job) {
         AioContext *aio_context;
@@ -1950,7 +1944,7 @@ static void blockdev_backup_abort(BlkActionState *common)

 static void blockdev_backup_clean(BlkActionState *common)
 {
-    BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
+    BlockJobActionState *state = DO_UPCAST(BlockJobActionState, common, common);
     AioContext *aio_context;

     if (!state->bs) {
@@ -2222,14 +2216,14 @@ static const BlkActionOps actions[] = {
         .clean = external_snapshot_clean,
     },
     [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = {
-        .instance_size = sizeof(DriveBackupState),
+        .instance_size = sizeof(BlockJobActionState),
         .prepare = drive_backup_prepare,
         .commit = drive_backup_commit,
         .abort = drive_backup_abort,
         .clean = drive_backup_clean,
     },
     [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = {
-        .instance_size = sizeof(BlockdevBackupState),
+        .instance_size = sizeof(BlockJobActionState),
         .prepare = blockdev_backup_prepare,
         .commit = blockdev_backup_commit,
         .abort = blockdev_backup_abort,
-- 
2.28.0