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Merge branch 'for-linus' of git://git.kernel.dk/linux-block 

Pull block core regression fix from Jens Axboe:
 "Single fix for a regression introduced in this development cycle,
  where dm on top of dif/dix is broken.  From Darrick Wong"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix regression where bio_integrity_process uses wrong bio_vec iterator
This commit is contained in:
Linus Torvalds 2014-12-03 14:05:24 -08:00
parent 46d967ae74 594416a720
commit 93bd38b31f
1 changed files with 7 additions and 6 deletions
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13
block/bio-integrity.c
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@ -216,9 +216,10 @@ static int bio_integrity_process(struct bio *bio,
{
struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev);
struct blk_integrity_iter iter;
struct bio_vec *bv;
struct bvec_iter bviter;
struct bio_vec bv;
struct bio_integrity_payload *bip = bio_integrity(bio);
unsigned int i, ret = 0;
unsigned int ret = 0;
void *prot_buf = page_address(bip->bip_vec->bv_page) +
bip->bip_vec->bv_offset;
@ -227,11 +228,11 @@ static int bio_integrity_process(struct bio *bio,
iter.seed = bip_get_seed(bip);
iter.prot_buf = prot_buf;
bio_for_each_segment_all(bv, bio, i) {
void *kaddr = kmap_atomic(bv->bv_page);
bio_for_each_segment(bv, bio, bviter) {
void *kaddr = kmap_atomic(bv.bv_page);
iter.data_buf = kaddr + bv->bv_offset;
iter.data_size = bv->bv_len;
iter.data_buf = kaddr + bv.bv_offset;
iter.data_size = bv.bv_len;
ret = proc_fn(&iter);
if (ret) {