block: remove bogus comments in __bio_add_pc_page
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 <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/bio.c b/block/bio.c
index e717b303..de26dc1 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -724,11 +724,6 @@
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 @@
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;
