Messages in this thread Patch in this message | | | Date | Tue, 4 Jun 2002 19:47:42 +1000 | From | Anton Blanchard <> | Subject | [PATCH] Use page_to_pfn in BIO code |
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Hi,
While porting the DISCONTIGMEM code to ppc64 (in order to do NUMA memory allocation) I noticed the bio code uses page_to_phys. We should instead be using the recently introduced page_to_pfn code.
This now limits the direct usage of mem_map (at least on ppc64) to two spots - page_to_pfn/pfn_to_page which makes DISCONTIGMEM support quite trivial.
Anton
diff -urN linux-2.5_ppc64/include/linux/bio.h linux-2.5_work/include/linux/bio.h --- linux-2.5_ppc64/include/linux/bio.h Wed May 8 10:31:25 2002 +++ linux-2.5_work/include/linux/bio.h Tue Jun 4 16:20:41 2002 @@ -128,8 +130,8 @@ /* * will die */ -#define bio_to_phys(bio) (page_to_phys(bio_page((bio))) + (unsigned long) bio_offset((bio))) -#define bvec_to_phys(bv) (page_to_phys((bv)->bv_page) + (unsigned long) (bv)->bv_offset) +#define bio_to_phys(bio) ((page_to_pfn(bio_page((bio))) << PAGE_SHIFT) + (unsigned long) bio_offset((bio))) +#define bvec_to_phys(bv) ((page_to_pfn((bv)->bv_page) << PAGE_SHIFT) + (unsigned long) (bv)->bv_offset) /* * queues that have highmem support enabled may still need to revert to - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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