On 05/10/2017 10:20 PM, Eric Blake wrote: > We are gradually moving away from sector-based interfaces, towards > byte-based. In the common case, allocation is unlikely to ever use > values that are not naturally sector-aligned, but it is possible > that byte-based values will let us be more precise about allocation > at the end of an unaligned file that can do byte-based access. > > Changing the signature of the function to use int64_t *pnum ensures > that the compiler enforces that all callers are updated. For now, > the io.c layer still assert()s that all callers are sector-aligned, > but that can be relaxed when a later patch implements byte-based > block status. Therefore, for the most part this patch is just the > addition of scaling at the callers followed by inverse scaling at > bdrv_is_allocated(). But some code, particularly stream_run(), > gets a lot simpler because it no longer has to mess with sectors. > > For ease of review, bdrv_is_allocated() was tackled separately. > > Signed-off-by: Eric Blake <ebl...@redhat.com> >
Reviewed-by: John Snow <js...@redhat.com>
