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block: remove bvec_to_phys

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We only use it in biovec_phys_mergeable and a m68k paravirt driver,
so just opencode it there.  Also remove the pointless unsigned long cast
for the offset in the opencoded instances.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-09-24 09:43:53 +02:00 committed by Jens Axboe
parent 3dccdae54f
commit 6e768461c2
3 changed files with 3 additions and 8 deletions
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2
arch/m68k/emu/nfblock.c
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@ -73,7 +73,7 @@ static blk_qc_t nfhd_make_request(struct request_queue *queue, struct bio *bio)
len = bvec.bv_len;
len >>= 9;
nfhd_read_write(dev->id, 0, dir, sec >> shift, len >> shift,
bvec_to_phys(&bvec));
page_to_phys(bvec.bv_page) + bvec.bv_offset);
sec += len;
}
bio_endio(bio);

4
block/blk.h
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@ -157,8 +157,8 @@ static inline bool biovec_phys_mergeable(struct request_queue *q,
struct bio_vec *vec1, struct bio_vec *vec2)
{
unsigned long mask = queue_segment_boundary(q);
phys_addr_t addr1 = bvec_to_phys(vec1);
phys_addr_t addr2 = bvec_to_phys(vec2);
phys_addr_t addr1 = page_to_phys(vec1->bv_page) + vec1->bv_offset;
phys_addr_t addr2 = page_to_phys(vec2->bv_page) + vec2->bv_offset;
if (addr1 + vec1->bv_len != addr2)
return false;

5
include/linux/bio.h
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@ -132,11 +132,6 @@ static inline bool bio_full(struct bio *bio)
return bio->bi_vcnt >= bio->bi_max_vecs;
}
/*
* will die
*/
#define bvec_to_phys(bv) (page_to_phys((bv)->bv_page) + (unsigned long) (bv)->bv_offset)
/*
* drivers should _never_ use the all version - the bio may have been split
* before it got to the driver and the driver won't own all of it