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block: simplify BIOVEC_PHYS_MERGEABLE

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Turn the macro into an inline, move it to blk.h and simplify the
arch hooks a bit.

Also rename the function to biovec_phys_mergeable as there is no need
to shout.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2018-09-24 09:43:50 +02:00 • committed by Jens Axboe
commit 6a9f5f240a
8 changed files with 28 additions and 30 deletions
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14
block/blk.h
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@ -149,6 +149,20 @@ static inline void blk_queue_enter_live(struct request_queue *q)
percpu_ref_get(&q->q_usage_counter);
}
#ifndef ARCH_BIOVEC_PHYS_MERGEABLE
#define ARCH_BIOVEC_PHYS_MERGEABLE(vec1, vec2) true
#endif
static inline bool biovec_phys_mergeable(const struct bio_vec *vec1,
const struct bio_vec *vec2)
{
if (bvec_to_phys(vec1) + vec1->bv_len != bvec_to_phys(vec2))
return false;
if (!ARCH_BIOVEC_PHYS_MERGEABLE(vec1, vec2))
return false;
return true;
}
static inline bool __bvec_gap_to_prev(struct request_queue *q,
struct bio_vec *bprv, unsigned int offset)
{