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-rw-r--r--block/blk-integrity.c40
1 files changed, 22 insertions, 18 deletions
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 03cf7179e8ef..7fbab84399e6 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;
}
@@ -87,24 +89,25 @@ 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)
@@ -114,10 +117,11 @@ new_segment:
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;
}