diff options
Diffstat (limited to 'include/linux/bio.h')
| -rw-r--r-- | include/linux/bio.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 9ddb19801a03..676870b2c88d 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -444,10 +444,13 @@ static inline void bio_wouldblock_error(struct bio *bio) /* * Calculate number of bvec segments that should be allocated to fit data - * pointed by @iter. + * pointed by @iter. If @iter is backed by bvec it's going to be reused + * instead of allocating a new one. */ static inline int bio_iov_vecs_to_alloc(struct iov_iter *iter, int max_segs) { + if (iov_iter_is_bvec(iter)) + return 0; return iov_iter_npages(iter, max_segs); } |