diff options
Diffstat (limited to 'fs/bcachefs/util.c')
| -rw-r--r-- | fs/bcachefs/util.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/bcachefs/util.c b/fs/bcachefs/util.c index a7edbcca1a84..553de8d8e3e5 100644 --- a/fs/bcachefs/util.c +++ b/fs/bcachefs/util.c @@ -704,6 +704,27 @@ void memcpy_from_bio(void *dst, struct bio *src, struct bvec_iter src_iter) } } +#ifdef CONFIG_BCACHEFS_DEBUG +void bch2_corrupt_bio(struct bio *bio) +{ + struct bvec_iter iter; + struct bio_vec bv; + unsigned offset = get_random_u32_below(bio->bi_iter.bi_size / sizeof(u64)); + + bio_for_each_segment(bv, bio, iter) { + unsigned u64s = bv.bv_len / sizeof(u64); + + if (offset < u64s) { + u64 *segment = bvec_kmap_local(&bv); + segment[offset] = get_random_u64(); + kunmap_local(segment); + return; + } + offset -= u64s; + } +} +#endif + #if 0 void eytzinger1_test(void) { |