We are never called with file system pages by defintions for the passthrough interface, and we also never undo any addition later these days.
Signed-off-by: Christoph Hellwig <[email protected]> --- block/bio.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/block/bio.c b/block/bio.c index e717b303e1fb..de26dc18bceb 100644 --- a/block/bio.c +++ b/block/bio.c @@ -724,11 +724,6 @@ static int __bio_add_pc_page(struct request_queue *q, struct bio *bio, if (((bio->bi_iter.bi_size + len) >> 9) > queue_max_hw_sectors(q)) return 0; - /* - * For filesystems with a blocksize smaller than the pagesize - * we will often be called with the same page as last time and - * a consecutive offset. Optimize this special case. - */ if (bio->bi_vcnt > 0) { bvec = &bio->bi_io_vec[bio->bi_vcnt - 1]; @@ -760,10 +755,6 @@ static int __bio_add_pc_page(struct request_queue *q, struct bio *bio, if (bio->bi_phys_segments >= queue_max_segments(q)) return 0; - /* - * setup the new entry, we might clear it again later if we - * cannot add the page - */ bvec = &bio->bi_io_vec[bio->bi_vcnt]; bvec->bv_page = page; bvec->bv_len = len; -- 2.20.1
