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authorTejun Heo <tj@kernel.org>2009-05-07 22:24:38 +0900
committerJens Axboe <jens.axboe@oracle.com>2009-05-11 09:50:53 +0200
commit5b93629b4509c03ffa87a9316412fedf6f58cb37 (patch)
treead5ceda3f718361b8df3057b4f9edcc79aa4cd9d /block
parentc3a4d78c580de4edc9ef0f7c59812fb02ceb037f (diff)
downloadblackbird-op-linux-5b93629b4509c03ffa87a9316412fedf6f58cb37.tar.gz
blackbird-op-linux-5b93629b4509c03ffa87a9316412fedf6f58cb37.zip
block: implement blk_rq_pos/[cur_]sectors() and convert obvious ones
Implement accessors - blk_rq_pos(), blk_rq_sectors() and blk_rq_cur_sectors() which return rq->hard_sector, rq->hard_nr_sectors and rq->hard_cur_sectors respectively and convert direct references of the said fields to the accessors. This is in preparation of request data length handling cleanup. Geert : suggested adding const to struct request * parameter to accessors Sergei : spotted error in patch description [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Ackec-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-barrier.c2
-rw-r--r--block/blk-core.c2
-rw-r--r--block/cfq-iosched.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-barrier.c b/block/blk-barrier.c
index c8d087655eff..c167de5b9eff 100644
--- a/block/blk-barrier.c
+++ b/block/blk-barrier.c
@@ -163,7 +163,7 @@ static inline bool start_ordered(struct request_queue *q, struct request **rqp)
* For an empty barrier, there's no actual BAR request, which
* in turn makes POSTFLUSH unnecessary. Mask them off.
*/
- if (!rq->hard_nr_sectors) {
+ if (!blk_rq_sectors(rq)) {
q->ordered &= ~(QUEUE_ORDERED_DO_BAR |
QUEUE_ORDERED_DO_POSTFLUSH);
/*
diff --git a/block/blk-core.c b/block/blk-core.c
index 394c5bd81271..895e55b74a40 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1683,7 +1683,7 @@ static void blk_account_io_done(struct request *req)
unsigned int blk_rq_bytes(struct request *rq)
{
if (blk_fs_request(rq))
- return rq->hard_nr_sectors << 9;
+ return blk_rq_sectors(rq) << 9;
return rq->data_len;
}
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index def0c698a4bc..575083a9ffe4 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -760,7 +760,7 @@ static void cfq_activate_request(struct request_queue *q, struct request *rq)
cfq_log_cfqq(cfqd, RQ_CFQQ(rq), "activate rq, drv=%d",
cfqd->rq_in_driver);
- cfqd->last_position = rq->hard_sector + rq->hard_nr_sectors;
+ cfqd->last_position = blk_rq_pos(rq) + blk_rq_sectors(rq);
}
static void cfq_deactivate_request(struct request_queue *q, struct request *rq)
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