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bio-integrity: Convert to bvec_iter

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The bio integrity is also stored in a bvec array, so if we use the bvec
iter code we just added, the integrity code won't need to implement its
own iteration stuff (bio_integrity_mark_head(), bio_integrity_mark_tail())

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
This commit is contained in:
Kent Overstreet
2013-11-23 17:20:16 -08:00
parent 1cb9dda4f4
commit d57a5f7c66
4 changed files with 71 additions and 126 deletions
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30
drivers/scsi/sd_dif.c
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@@ -365,7 +365,6 @@ void sd_dif_prepare(struct request *rq, sector_t hw_sector,
struct bio *bio;
struct scsi_disk *sdkp;
struct sd_dif_tuple *sdt;
unsigned int i, j;
u32 phys, virt;
sdkp = rq->bio->bi_bdev->bd_disk->private_data;
@@ -376,19 +375,21 @@ void sd_dif_prepare(struct request *rq, sector_t hw_sector,
phys = hw_sector & 0xffffffff;
__rq_for_each_bio(bio, rq) {
struct bio_vec *iv;
struct bio_vec iv;
struct bvec_iter iter;
unsigned int j;
/* Already remapped? */
if (bio_flagged(bio, BIO_MAPPED_INTEGRITY))
break;
virt = bio->bi_integrity->bip_sector & 0xffffffff;
virt = bio->bi_integrity->bip_iter.bi_sector & 0xffffffff;
bip_for_each_vec(iv, bio->bi_integrity, i) {
sdt = kmap_atomic(iv->bv_page)
+ iv->bv_offset;
bip_for_each_vec(iv, bio->bi_integrity, iter) {
sdt = kmap_atomic(iv.bv_page)
+ iv.bv_offset;
for (j = 0 ; j < iv->bv_len ; j += tuple_sz, sdt++) {
for (j = 0; j < iv.bv_len; j += tuple_sz, sdt++) {
if (be32_to_cpu(sdt->ref_tag) == virt)
sdt->ref_tag = cpu_to_be32(phys);
@@ -414,7 +415,7 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes)
struct scsi_disk *sdkp;
struct bio *bio;
struct sd_dif_tuple *sdt;
unsigned int i, j, sectors, sector_sz;
unsigned int j, sectors, sector_sz;
u32 phys, virt;
sdkp = scsi_disk(scmd->request->rq_disk);
@@ -430,15 +431,16 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes)
phys >>= 3;
__rq_for_each_bio(bio, scmd->request) {
struct bio_vec *iv;
struct bio_vec iv;
struct bvec_iter iter;
virt = bio->bi_integrity->bip_sector & 0xffffffff;
virt = bio->bi_integrity->bip_iter.bi_sector & 0xffffffff;
bip_for_each_vec(iv, bio->bi_integrity, i) {
sdt = kmap_atomic(iv->bv_page)
+ iv->bv_offset;
bip_for_each_vec(iv, bio->bi_integrity, iter) {
sdt = kmap_atomic(iv.bv_page)
+ iv.bv_offset;
for (j = 0 ; j < iv->bv_len ; j += tuple_sz, sdt++) {
for (j = 0; j < iv.bv_len; j += tuple_sz, sdt++) {
if (sectors == 0) {
kunmap_atomic(sdt);