Re: [Qemu-devel] [PATCH v2] block: per caller dirty bitmap

[Paolo Bonzini]

Il 04/11/2013 10:30, Fam Zheng ha scritto:
> diff --git a/include/block/block.h b/include/block/block.h
> index 3560deb..06f424c 100644
> --- a/include/block/block.h
> +++ b/include/block/block.h
> @@ -388,12 +388,15 @@ void *qemu_blockalign(BlockDriverState *bs, size_t 
> size);
>  bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov);
>  
>  struct HBitmapIter;
> -void bdrv_set_dirty_tracking(BlockDriverState *bs, int granularity);
> -int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
> +typedef struct BdrvDirtyBitmap BdrvDirtyBitmap;
> +BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int 
> granularity);
> +void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap 
> *bitmap);
> +int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t 
> sector);
>  void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int 
> nr_sectors);
>  void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int 
> nr_sectors);
> -void bdrv_dirty_iter_init(BlockDriverState *bs, struct HBitmapIter *hbi);
> -int64_t bdrv_get_dirty_count(BlockDriverState *bs);
> +void bdrv_dirty_iter_init(BlockDriverState *bs,
> +                          BdrvDirtyBitmap *bitmap, struct HBitmapIter *hbi);
> +int64_t bdrv_get_dirty_count(BlockDriverState *bs, BdrvDirtyBitmap *bitmap);
>  
>  void bdrv_enable_copy_on_read(BlockDriverState *bs);
>  void bdrv_disable_copy_on_read(BlockDriverState *bs);

You do not really need the BDS argument to the functions, do you?  (Or
do you have other plans?)

Apart from this, looks good.

Paolo