On 23.01.2017 13:10, Vladimir Sementsov-Ogievskiy wrote: > Auto loading bitmaps are bitmaps in Qcow2, with the AUTO flag set. They > are loaded when the image is opened and become BdrvDirtyBitmaps for the > corresponding drive. > > Extra data in bitmaps is not supported for now. > > Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com> > --- > block/Makefile.objs | 2 +- > block/qcow2-bitmap.c | 712 > +++++++++++++++++++++++++++++++++++++++++++++++++++ > block/qcow2.c | 2 + > block/qcow2.h | 3 + > 4 files changed, 718 insertions(+), 1 deletion(-) > create mode 100644 block/qcow2-bitmap.c
[...]
> new file mode 100644
> index 0000000000..758622dcfc
> --- /dev/null
> +++ b/block/qcow2-bitmap.c
[...]
> +
> +/*
> + * Bitmap List end
> + */
> +
> +static int update_ext_header_and_dir_in_place(BlockDriverState *bs,
> + Qcow2BitmapList *bm_list)
> +{
> + BDRVQcow2State *s = bs->opaque;
> + int ret;
> +
> + if (!(s->autoclear_features & QCOW2_AUTOCLEAR_BITMAPS) ||
> + bm_list == NULL || QSIMPLEQ_EMPTY(bm_list) ||
> + bitmap_list_count(bm_list) != s->nb_bitmaps)
> + {
> + return -EINVAL;
> + }
> +
> + s->autoclear_features &= ~(uint64_t)QCOW2_AUTOCLEAR_BITMAPS;
> + ret = update_header_sync(bs);
This function is defined only in patch 13, until then the code won't
compile; the definition should be moved into this patch.
Max
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