diff options
| author | Mike Christie <mchristi@redhat.com> | 2016-06-05 19:32:20 (GMT) |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-06-07 19:41:38 (GMT) |
| commit | 43b62ce3ff0ac1f13b732cb1bd130f522af1dba4 (patch) | |
| tree | 934a7feacfc4f6402a6519fd5c2091edfb41c0e5 | |
| parent | 8e45c6f8808357704519c217dc633bc43afc2a61 (diff) | |
| download | linux-43b62ce3ff0ac1f13b732cb1bd130f522af1dba4.tar.xz | |
block: move bio io prio to a new field
In the next patch, we move drop the compat code and make
the op a separate value that is hidden in bi_rw. To give
the op and rq bits flags room to grow this moves prio to
its own field.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | include/linux/bio.h | 14 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 5 |
2 files changed, 4 insertions, 15 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 4568647..35108c2 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -47,18 +47,8 @@ #define bio_op(bio) (op_from_rq_bits((bio)->bi_rw)) #define bio_set_op_attrs(bio, op, flags) ((bio)->bi_rw |= (op | flags)) -/* - * upper 16 bits of bi_rw define the io priority of this bio - */ -#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS) -#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT) -#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio)) - -#define bio_set_prio(bio, prio) do { \ - WARN_ON(prio >= (1 << IOPRIO_BITS)); \ - (bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1); \ - (bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT); \ -} while (0) +#define bio_prio(bio) (bio)->bi_ioprio +#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio) /* * various member access, note that bio_data should of course not be used diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 6e60baa..2738413 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -48,9 +48,8 @@ struct bio { struct block_device *bi_bdev; unsigned int bi_flags; /* status, command, etc */ int bi_error; - unsigned long bi_rw; /* bottom bits READ/WRITE, - * top bits priority - */ + unsigned long bi_rw; /* READ/WRITE */ + unsigned short bi_ioprio; struct bvec_iter bi_iter; |