block: drop unused BlockDirtyBitmapState->aio_context field

The dirty bitmap actions in qmp_transaction have not used AioContext
since the dirty bitmap locking discipline was introduced in commit
2119882c7eb7e2c612b24fc0c8d86f5887d6f1c3 ("block: introduce
dirty_bitmap_mutex").  Remove the unused field.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20171206144550.22295-7-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/blockdev.c b/blockdev.c
index 6332a24..e865ae4 100644 (file)
--- a/blockdev.c
+++ b/blockdev.c
@@ -2049,7 +2049,6 @@ typedef struct BlockDirtyBitmapState {
     BlkActionState common;
     BdrvDirtyBitmap *bitmap;
     BlockDriverState *bs;
-    AioContext *aio_context;
     HBitmap *backup;
     bool prepared;
 } BlockDirtyBitmapState;
@@ -2128,7 +2127,6 @@ static void block_dirty_bitmap_clear_prepare(BlkActionState *common,
     }
 
     bdrv_clear_dirty_bitmap(state->bitmap, &state->backup);
-    /* AioContext is released in .clean() */
 }
 
 static void block_dirty_bitmap_clear_abort(BlkActionState *common)
@@ -2149,16 +2147,6 @@ static void block_dirty_bitmap_clear_commit(BlkActionState *common)
     hbitmap_free(state->backup);
 }
 
-static void block_dirty_bitmap_clear_clean(BlkActionState *common)
-{
-    BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
-                                             common, common);
-
-    if (state->aio_context) {
-        aio_context_release(state->aio_context);
-    }
-}
-
 static void abort_prepare(BlkActionState *common, Error **errp)
 {
     error_setg(errp, "Transaction aborted using Abort action");
@@ -2219,7 +2207,6 @@ static const BlkActionOps actions[] = {
         .prepare = block_dirty_bitmap_clear_prepare,
         .commit = block_dirty_bitmap_clear_commit,
         .abort = block_dirty_bitmap_clear_abort,
-        .clean = block_dirty_bitmap_clear_clean,
     }
 };