biovec_phys_mergeable

Name:biovec_phys_mergeable

Proto:static inline bool biovec_phys_mergeable(struct request_queue *q, struct bio_vec *vec1, struct bio_vec *vec2)

Type:bool

Parameter:

Type	Parameter	Name
struct request_queue *	q
struct bio_vec *	vec1
struct bio_vec *	vec2

78

mask = queue_segment_boundary(q)

79

addr1 = Change "struct page" to physical address.(bv_page) + bv_offset

80

addr2 = Change "struct page" to physical address.(bv_page) + bv_offset

82

If addr1 + bv_len != addr2 Then Return false

84

If xen_domain() && Not xen_biovec_phys_mergeable(vec1, bv_page) Then Return false

86

If (addr1 | mask) != ( addr2 + bv_len - 1 | mask) Then Return false

88

Return true

**Caller**
Name	Describe
bio_will_gap
__blk_segment_map_sg_merge	ly try to merge bvecs into one sg if they are from two bios
blk_rq_count_integrity_sg	lk_rq_count_integrity_sg - Count number of integrity scatterlist elements@q: request queue@bio: bio with integrity metadata attached* Description: Returns the number of elements required in a* scatterlist corresponding to the integrity metadata in a bio.
blk_rq_map_integrity_sg	lk_rq_map_integrity_sg - Map integrity metadata into a scatterlist@q: request queue@bio: bio with integrity metadata attached@sglist: target scatterlist Description: Map the integrity vectors in request into a* scatterlist

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