diff options
| author | Jens Axboe <axboe@kernel.dk> | 2022-08-05 16:39:04 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-22 10:07:56 -0600 |
| commit | f5d632d15e9e0a037339601680d82bb840f85d10 (patch) | |
| tree | 9b13ba0fcdf8da7c7fdd6a93e072517cd79d5b6e /block | |
| parent | d322f355e9368045ff89b7a3df9324fe0c33839b (diff) | |
block: shrink rq_map_data a bit
We don't need full ints for several of these members. Change the
page_order and nr_entries to unsigned shorts, and the true/false from_user
and null_mapped to booleans.
This shrinks the struct from 32 to 24 bytes on 64-bit archs.
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-map.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-map.c b/block/blk-map.c index 7196a6b64c80..379c52d2f2d1 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -158,7 +158,7 @@ static int bio_copy_user_iov(struct request *rq, struct rq_map_data *map_data, bio_init(bio, NULL, bio->bi_inline_vecs, nr_pages, req_op(rq)); if (map_data) { - nr_pages = 1 << map_data->page_order; + nr_pages = 1U << map_data->page_order; i = map_data->offset / PAGE_SIZE; } while (len) { |