diff options
Diffstat (limited to 'fs/btrfs/check-integrity.c')
| -rw-r--r-- | fs/btrfs/check-integrity.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 113cb85c1fd4..6cc8296be030 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -2677,7 +2677,7 @@ static void __btrfsic_submit_bio(struct bio *bio) dev_state = btrfsic_dev_state_lookup(bio->bi_bdev->bd_dev); if (NULL != dev_state && (bio_op(bio) == REQ_OP_WRITE) && bio_has_data(bio)) { - unsigned int i = 0; + int i = 0; u64 dev_bytenr; u64 cur_bytenr; struct bio_vec bvec; @@ -2702,7 +2702,7 @@ static void __btrfsic_submit_bio(struct bio *bio) bio_for_each_segment(bvec, bio, iter) { BUG_ON(bvec.bv_len != PAGE_SIZE); - mapped_datav[i] = kmap(bvec.bv_page); + mapped_datav[i] = kmap_local_page(bvec.bv_page); i++; if (dev_state->state->print_mask & @@ -2715,8 +2715,9 @@ static void __btrfsic_submit_bio(struct bio *bio) mapped_datav, segs, bio, &bio_is_patched, bio->bi_opf); - bio_for_each_segment(bvec, bio, iter) - kunmap(bvec.bv_page); + /* Unmap in reverse order */ + for (--i; i >= 0; i--) + kunmap_local(mapped_datav[i]); kfree(mapped_datav); } else if (NULL != dev_state && (bio->bi_opf & REQ_PREFLUSH)) { if (dev_state->state->print_mask & |