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authorJens Axboe <jens.axboe@oracle.com>2009-09-11 14:32:04 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-09-11 14:33:31 +0200
commit1f98a13f623e0ef666690a18c1250335fc6d7ef1 (patch)
tree15ca2dddffaa18a0d1844957f4f8cc707cbb8117 /block
parente7e503aedb1f4d165081cb8d47a58c38f80f0cb4 (diff)
bio: first step in sanitizing the bio->bi_rw flag testing
Get rid of any functions that test for these bits and make callers use bio_rw_flagged() directly. Then it is at least directly apparent what variable and flag they check. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c25
-rw-r--r--block/cfq-iosched.c2
-rw-r--r--block/elevator.c3
3 files changed, 16 insertions, 14 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index c822239bcc9..52559715cb9 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1114,24 +1114,24 @@ void init_request_from_bio(struct request *req, struct bio *bio)
* Inherit FAILFAST from bio (for read-ahead, and explicit
* FAILFAST). FAILFAST flags are identical for req and bio.
*/
- if (bio_rw_ahead(bio))
+ if (bio_rw_flagged(bio, BIO_RW_AHEAD))
req->cmd_flags |= REQ_FAILFAST_MASK;
else
req->cmd_flags |= bio->bi_rw & REQ_FAILFAST_MASK;
- if (unlikely(bio_discard(bio))) {
+ if (unlikely(bio_rw_flagged(bio, BIO_RW_DISCARD))) {
req->cmd_flags |= REQ_DISCARD;
- if (bio_barrier(bio))
+ if (bio_rw_flagged(bio, BIO_RW_BARRIER))
req->cmd_flags |= REQ_SOFTBARRIER;
req->q->prepare_discard_fn(req->q, req);
- } else if (unlikely(bio_barrier(bio)))
+ } else if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER)))
req->cmd_flags |= REQ_HARDBARRIER;
- if (bio_sync(bio))
+ if (bio_rw_flagged(bio, BIO_RW_SYNCIO))
req->cmd_flags |= REQ_RW_SYNC;
- if (bio_rw_meta(bio))
+ if (bio_rw_flagged(bio, BIO_RW_META))
req->cmd_flags |= REQ_RW_META;
- if (bio_noidle(bio))
+ if (bio_rw_flagged(bio, BIO_RW_NOIDLE))
req->cmd_flags |= REQ_NOIDLE;
req->errors = 0;
@@ -1155,12 +1155,12 @@ static int __make_request(struct request_queue *q, struct bio *bio)
int el_ret;
unsigned int bytes = bio->bi_size;
const unsigned short prio = bio_prio(bio);
- const int sync = bio_sync(bio);
- const int unplug = bio_unplug(bio);
+ const bool sync = bio_rw_flagged(bio, BIO_RW_SYNCIO);
+ const bool unplug = bio_rw_flagged(bio, BIO_RW_UNPLUG);
const unsigned int ff = bio->bi_rw & REQ_FAILFAST_MASK;
int rw_flags;
- if (bio_barrier(bio) && bio_has_data(bio) &&
+ if (bio_rw_flagged(bio, BIO_RW_BARRIER) && bio_has_data(bio) &&
(q->next_ordered == QUEUE_ORDERED_NONE)) {
bio_endio(bio, -EOPNOTSUPP);
return 0;
@@ -1174,7 +1174,7 @@ static int __make_request(struct request_queue *q, struct bio *bio)
spin_lock_irq(q->queue_lock);
- if (unlikely(bio_barrier(bio)) || elv_queue_empty(q))
+ if (unlikely(bio_rw_flagged(bio, BIO_RW_BARRIER)) || elv_queue_empty(q))
goto get_rq;
el_ret = elv_merge(q, &req, bio);
@@ -1470,7 +1470,8 @@ static inline void __generic_make_request(struct bio *bio)
if (bio_check_eod(bio, nr_sectors))
goto end_io;
- if (bio_discard(bio) && !q->prepare_discard_fn) {
+ if (bio_rw_flagged(bio, BIO_RW_DISCARD) &&
+ !q->prepare_discard_fn) {
err = -EOPNOTSUPP;
goto end_io;
}
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index ca0d7e71324..9e6d0af6c99 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -257,7 +257,7 @@ static inline void cic_set_cfqq(struct cfq_io_context *cic,
*/
static inline int cfq_bio_sync(struct bio *bio)
{
- if (bio_data_dir(bio) == READ || bio_sync(bio))
+ if (bio_data_dir(bio) == READ || bio_rw_flagged(bio, BIO_RW_SYNCIO))
return 1;
return 0;
diff --git a/block/elevator.c b/block/elevator.c
index ca861927ba4..1975b619c86 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -79,7 +79,8 @@ int elv_rq_merge_ok(struct request *rq, struct bio *bio)
/*
* Don't merge file system requests and discard requests
*/
- if (bio_discard(bio) != bio_discard(rq->bio))
+ if (bio_rw_flagged(bio, BIO_RW_DISCARD) !=
+ bio_rw_flagged(rq->bio, BIO_RW_DISCARD))
return 0;
/*