mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 11:06:42 +07:00
14 lines
383 B
C
14 lines
383 B
C
|
#include <linux/bio.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <xen/page.h>
|
||
|
|
|
||
|
|
bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
|
||
|
|
const struct bio_vec *vec2)
|
||
|
|
{
|
||
|
|
unsigned long mfn1 = pfn_to_mfn(page_to_pfn(vec1->bv_page));
|
||
|
|
unsigned long mfn2 = pfn_to_mfn(page_to_pfn(vec2->bv_page));
|
||
|
|
|
||
|
|
return __BIOVEC_PHYS_MERGEABLE(vec1, vec2) &&
|
||
|
|
((mfn1 == mfn2) || ((mfn1+1) == mfn2));
|
||
|
|
}
|