diff options
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 2585402c2b8b..cd8d47bf34b4 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -188,8 +188,15 @@ struct bio { #define __BVEC_END(bio) bio_iovec_idx((bio), (bio)->bi_vcnt - 1) #define __BVEC_START(bio) bio_iovec_idx((bio), (bio)->bi_idx) + +/* + * allow arch override, for eg virtualized architectures (put in asm/io.h) + */ +#ifndef BIOVEC_PHYS_MERGEABLE #define BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ ((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2))) +#endif + #define BIOVEC_VIRT_MERGEABLE(vec1, vec2) \ ((((bvec_to_phys((vec1)) + (vec1)->bv_len) | bvec_to_phys((vec2))) & (BIO_VMERGE_BOUNDARY - 1)) == 0) #define __BIO_SEG_BOUNDARY(addr1, addr2, mask) \ |