On Wed, 2011-09-21 at 18:26 +0200, Michal Nazarewicz wrote:
> - page += 1 << order;
> +
> + if (zone_pfn_same_memmap(pfn - count, pfn))
> + page += count;
> + else
> + page = pfn_to_page(pfn);
> }
That al
From: Michal Nazarewicz
Signed-off-by: Michal Nazarewicz
---
include/asm-generic/memory_model.h | 17 ++
include/linux/page-isolation.h |4 ++-
mm/page_alloc.c| 43 +++
3 files changed, 53 insertions(+), 11 deletions(-
On Wed, 2011-09-21 at 17:19 +0200, Michal Nazarewicz wrote:
> Do the attached changes seem to make sense?
The logic looks OK.
> I wanted to avoid calling pfn_to_page() each time as it seem fairly
> expensive in sparsemem and disctontig modes. At the same time, the
> macro trickery is so that use
From: Michal Nazarewicz
Signed-off-by: Michal Nazarewicz
---
include/linux/page-isolation.h |4 ++-
mm/page_alloc.c| 66 ++-
2 files changed, 60 insertions(+), 10 deletions(-)
> On Fri, 2011-08-19 at 16:27 +0200, Marek Szyprowski wrote
