diff options
Diffstat (limited to 'block/blk-integrity.c')
| -rw-r--r-- | block/blk-integrity.c | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/block/blk-integrity.c b/block/blk-integrity.c index da2a818c3a9..7fbab84399e 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -43,30 +43,32 @@ static const char *bi_unsupported_name = "unsupported"; */ int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *bio) { - struct bio_vec *iv, *ivprv = NULL; + struct bio_vec iv, ivprv = { NULL }; unsigned int segments = 0; unsigned int seg_size = 0; - unsigned int i = 0; + struct bvec_iter iter; + int prev = 0; - bio_for_each_integrity_vec(iv, bio, i) { + bio_for_each_integrity_vec(iv, bio, iter) { - if (ivprv) { - if (!BIOVEC_PHYS_MERGEABLE(ivprv, iv)) + if (prev) { + if (!BIOVEC_PHYS_MERGEABLE(&ivprv, &iv)) goto new_segment; - if (!BIOVEC_SEG_BOUNDARY(q, ivprv, iv)) + if (!BIOVEC_SEG_BOUNDARY(q, &ivprv, &iv)) goto new_segment; - if (seg_size + iv->bv_len > queue_max_segment_size(q)) + if (seg_size + iv.bv_len > queue_max_segment_size(q)) goto new_segment; - seg_size += iv->bv_len; + seg_size += iv.bv_len; } else { new_segment: segments++; - seg_size = iv->bv_len; + seg_size = iv.bv_len; } + prev = 1; ivprv = iv; } @@ -87,37 +89,39 @@ EXPORT_SYMBOL(blk_rq_count_integrity_sg); int blk_rq_map_integrity_sg(struct request_queue *q, struct bio *bio, struct scatterlist *sglist) { - struct bio_vec *iv, *ivprv = NULL; + struct bio_vec iv, ivprv = { NULL }; struct scatterlist *sg = NULL; unsigned int segments = 0; - unsigned int i = 0; + struct bvec_iter iter; + int prev = 0; - bio_for_each_integrity_vec(iv, bio, i) { + bio_for_each_integrity_vec(iv, bio, iter) { - if (ivprv) { - if (!BIOVEC_PHYS_MERGEABLE(ivprv, iv)) + if (prev) { + if (!BIOVEC_PHYS_MERGEABLE(&ivprv, &iv)) goto new_segment; - if (!BIOVEC_SEG_BOUNDARY(q, ivprv, iv)) + if (!BIOVEC_SEG_BOUNDARY(q, &ivprv, &iv)) goto new_segment; - if (sg->length + iv->bv_len > queue_max_segment_size(q)) + if (sg->length + iv.bv_len > queue_max_segment_size(q)) goto new_segment; - sg->length += iv->bv_len; + sg->length += iv.bv_len; } else { new_segment: if (!sg) sg = sglist; else { - sg->page_link &= ~0x02; + sg_unmark_end(sg); sg = sg_next(sg); } - sg_set_page(sg, iv->bv_page, iv->bv_len, iv->bv_offset); + sg_set_page(sg, iv.bv_page, iv.bv_len, iv.bv_offset); segments++; } + prev = 1; ivprv = iv; } @@ -420,6 +424,8 @@ int blk_integrity_register(struct gendisk *disk, struct blk_integrity *template) } else bi->name = bi_unsupported_name; + disk->queue->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES; + return 0; } EXPORT_SYMBOL(blk_integrity_register); @@ -438,6 +444,8 @@ void blk_integrity_unregister(struct gendisk *disk) if (!disk || !disk->integrity) return; + disk->queue->backing_dev_info.capabilities &= ~BDI_CAP_STABLE_WRITES; + bi = disk->integrity; kobject_uevent(&bi->kobj, KOBJ_REMOVE); |