On 4/16/19 7:11 PM, Ming Lei wrote: > bvec->bv_offset may be bigger than PAGE_SIZE sometimes, such as, > when one bio is splitted in the middle of one bvec via bio_split(), > and bi_iter.bi_bvec_done is used to build offset of the 1st bvec of > remained bio. And the remained bio's bvec may be re-submitted to fs > layer via ITER_IBVEC, such as loop and nvme-loop. > > So we have to make sure that every bvec's offset is less than > PAGE_SIZE from bio_for_each_segment_all() because some drivers(loop, > nvme-loop) passes the splitted bvec to fs layer via ITER_BVEC. > > This patch fixes this issue reported by Zhang Yi When running nvme/011. Applied, thanks. -- Jens Axboe
