Some device may set segment boundary as PAGE_SIZE - 1. If the bvec
crosses pages, and meantime its length is <= PAGE_SIZE, we still need
to split the bvec into 2 segments.
Fixes this issue by still splitting bio if the single bvec crosses
pages.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: fa5322872187 (block: avoid blk_bio_segment_split for small I/O operations)
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
*/
if (!q->limits.chunk_sectors &&
(*bio)->bi_vcnt == 1 &&
- (*bio)->bi_io_vec[0].bv_len <= PAGE_SIZE) {
+ ((*bio)->bi_io_vec[0].bv_len +
+ (*bio)->bi_io_vec[0].bv_offset) <= PAGE_SIZE) {
*nr_segs = 1;
break;
}