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block: Fix integrity verification 

Commit bf36f9cfa6 caused a regression by effectively reverting Nic's
fix from 5837c80e87 that ensures we traverse the full bio_vec list
upon completion.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen 2014-04-08 22:43:44 -04:00 committed by Jens Axboe
parent b7aa84d9cb
commit 0bc6997306
1 changed files with 9 additions and 10 deletions
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19
fs/bio-integrity.c
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@ -309,10 +309,9 @@ static int bio_integrity_generate_verify(struct bio *bio, int operate)
{
struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev);
struct blk_integrity_exchg bix;
struct bio_vec bv;
struct bvec_iter iter;
struct bio_vec *bv;
sector_t sector;
unsigned int sectors, ret = 0;
unsigned int sectors, ret = 0, i;
void *prot_buf = bio->bi_integrity->bip_buf;
if (operate)
@ -323,16 +322,16 @@ static int bio_integrity_generate_verify(struct bio *bio, int operate)
bix.disk_name = bio->bi_bdev->bd_disk->disk_name;
bix.sector_size = bi->sector_size;
bio_for_each_segment(bv, bio, iter) {
void *kaddr = kmap_atomic(bv.bv_page);
bix.data_buf = kaddr + bv.bv_offset;
bix.data_size = bv.bv_len;
bio_for_each_segment_all(bv, bio, i) {
void *kaddr = kmap_atomic(bv->bv_page);
bix.data_buf = kaddr + bv->bv_offset;
bix.data_size = bv->bv_len;
bix.prot_buf = prot_buf;
bix.sector = sector;
if (operate) {
if (operate)
bi->generate_fn(&bix);
} else {
else {
ret = bi->verify_fn(&bix);
if (ret) {
kunmap_atomic(kaddr);
@ -340,7 +339,7 @@ static int bio_integrity_generate_verify(struct bio *bio, int operate)
}
}
sectors = bv.bv_len / bi->sector_size;
sectors = bv->bv_len / bi->sector_size;
sector += sectors;
prot_buf += sectors * bi->tuple_size;