Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated()

[Stefan Hajnoczi]

2011/6/15 Dmitry Konishchev <address@hidden>:
> On Wed, Jun 15, 2011 at 5:33 PM, Stefan Hajnoczi <address@hidden> wrote:
>> "disable caching"?
>
> Image geometry caching. I meant If I call bdrv_get_geometry() every
> time I need image geometry instead of obtaining it from bs_geometry
> variable.

Haha, sorry.  Too much caching: -drive cache=none, total_sectors
cached value, bdrv_get_geometry() cached values :).

Anyway, bdrv_getlength() will return the total_sectors value instead
of calling into raw-posix.c .bdrv_getlength().  That's why it should
be cheap.

Stefan