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| author | Ming Lei <tom.leiming@gmail.com> | 2016-11-11 20:05:33 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-11-22 08:57:55 -0700 |
| commit | 4113b88a658772e09b3fe475a5a4b7c9a9cdc04b (patch) | |
| tree | 22acc500d1bce0e7b9e8afa3c6f34cee7de010dd | |
| parent | 84c8590646d5b35804bac60eb58b145839b5893e (diff) | |
| download | linux-4113b88a658772e09b3fe475a5a4b7c9a9cdc04b.tar.bz2 | |
bcache: debug: avoid accessing .bi_io_vec directly
Instead we use standard iterator way to do that.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | drivers/md/bcache/debug.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c index 1c9130ae0073..06f55056aaae 100644 --- a/drivers/md/bcache/debug.c +++ b/drivers/md/bcache/debug.c @@ -107,8 +107,8 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio) { char name[BDEVNAME_SIZE]; struct bio *check; - struct bio_vec bv; - struct bvec_iter iter; + struct bio_vec bv, cbv; + struct bvec_iter iter, citer = { 0 }; check = bio_clone(bio, GFP_NOIO); if (!check) @@ -120,9 +120,13 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio) submit_bio_wait(check); + citer.bi_size = UINT_MAX; bio_for_each_segment(bv, bio, iter) { void *p1 = kmap_atomic(bv.bv_page); - void *p2 = page_address(check->bi_io_vec[iter.bi_idx].bv_page); + void *p2; + + cbv = bio_iter_iovec(check, citer); + p2 = page_address(cbv.bv_page); cache_set_err_on(memcmp(p1 + bv.bv_offset, p2 + bv.bv_offset, @@ -133,6 +137,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio) (uint64_t) bio->bi_iter.bi_sector); kunmap_atomic(p1); + bio_advance_iter(check, &citer, bv.bv_len); } bio_free_pages(check); |