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block: drop virtual merging accounting

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Remove virtual merge accounting.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Mikulas Patocka 2008-08-15 10:15:19 +02:00 • committed by Jens Axboe
parent 6a421c1dc9
commit b8b3e16cfe
3 changed files with 8 additions and 92 deletions
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15
include/linux/bio.h
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@ -26,21 +26,8 @@
#ifdef CONFIG_BLOCK
/* Platforms may set this to teach the BIO layer about IOMMU hardware. */
#include <asm/io.h>
#if defined(BIO_VMERGE_MAX_SIZE) && defined(BIO_VMERGE_BOUNDARY)
#define BIOVEC_VIRT_START_SIZE(x) (bvec_to_phys(x) & (BIO_VMERGE_BOUNDARY - 1))
#define BIOVEC_VIRT_OVERSIZE(x) ((x) > BIO_VMERGE_MAX_SIZE)
#else
#define BIOVEC_VIRT_START_SIZE(x) 0
#define BIOVEC_VIRT_OVERSIZE(x) 0
#endif
#ifndef BIO_VMERGE_BOUNDARY
#define BIO_VMERGE_BOUNDARY 0
#endif
#define BIO_DEBUG
#ifdef BIO_DEBUG
@ -240,8 +227,6 @@ static inline void *bio_data(struct bio *bio)
((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) \
(((addr1) | (mask)) == (((addr2) - 1) | (mask)))
#define BIOVEC_SEG_BOUNDARY(q, b1, b2) \