block: remove bdrv_coroutine_enter

It has only one caller---inline it and remove the function.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20221215130225.476477-2-pbonzini@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block.c

@@ -7178,12 +7178,6 @@ void coroutine_fn bdrv_co_unlock(BlockDriverState *bs)
     }
 }
 
-void bdrv_coroutine_enter(BlockDriverState *bs, Coroutine *co)
-{
-    IO_CODE();
-    aio_co_enter(bdrv_get_aio_context(bs), co);
-}
-
 static void bdrv_do_remove_aio_context_notifier(BdrvAioNotifier *ban)
 {
     GLOBAL_STATE_CODE();

block/block-backend.c

@@ -1555,7 +1555,7 @@ static BlockAIOCB *blk_aio_prwv(BlockBackend *blk, int64_t offset,
     acb->has_returned = false;
 
     co = qemu_coroutine_create(co_entry, acb);
-    bdrv_coroutine_enter(blk_bs(blk), co);
+    aio_co_enter(blk_get_aio_context(blk), co);
 
     acb->has_returned = true;
     if (acb->rwco.ret != NOT_DONE) {

include/block/block-io.h

@@ -213,11 +213,6 @@ AioContext *coroutine_fn bdrv_co_enter(BlockDriverState *bs);
  */
 void coroutine_fn bdrv_co_leave(BlockDriverState *bs, AioContext *old_ctx);
 
-/**
- * Transfer control to @co in the aio context of @bs
- */
-void bdrv_coroutine_enter(BlockDriverState *bs, Coroutine *co);
-
 AioContext *child_of_bds_get_parent_aio_context(BdrvChild *c);
 
 void bdrv_io_plug(BlockDriverState *bs);