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authorJens Axboe <axboe@suse.de>2006-08-10 08:44:47 +0200
committerJens Axboe <axboe@nelson.home.kernel.dk>2006-09-30 20:23:37 +0200
commit4aff5e2333c9a1609662f2091f55c3f6fffdad36 (patch)
treeb73d8c2b7c1bdc03d3313c108da7dfc95ee95525 /block/elevator.c
parent77ed74da26f50fa28471571ee7a2251b77526d84 (diff)
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[PATCH] Split struct request ->flags into two parts
Right now ->flags is a bit of a mess: some are request types, and others are just modifiers. Clean this up by splitting it into ->cmd_type and ->cmd_flags. This allows introduction of generic Linux block message types, useful for sending generic Linux commands to block devices. Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'block/elevator.c')
-rw-r--r--block/elevator.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/block/elevator.c b/block/elevator.c
index 9b72dc7c8a5..4ac97b64204 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -242,7 +242,7 @@ void elv_dispatch_sort(request_queue_t *q, struct request *rq)
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
- if (pos->flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
+ if (pos->cmd_flags & (REQ_SOFTBARRIER|REQ_HARDBARRIER|REQ_STARTED))
break;
if (rq->sector >= boundary) {
if (pos->sector < boundary)
@@ -313,7 +313,7 @@ void elv_requeue_request(request_queue_t *q, struct request *rq)
e->ops->elevator_deactivate_req_fn(q, rq);
}
- rq->flags &= ~REQ_STARTED;
+ rq->cmd_flags &= ~REQ_STARTED;
elv_insert(q, rq, ELEVATOR_INSERT_REQUEUE);
}
@@ -344,13 +344,13 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
switch (where) {
case ELEVATOR_INSERT_FRONT:
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
list_add(&rq->queuelist, &q->queue_head);
break;
case ELEVATOR_INSERT_BACK:
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
elv_drain_elevator(q);
list_add_tail(&rq->queuelist, &q->queue_head);
/*
@@ -369,7 +369,7 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
case ELEVATOR_INSERT_SORT:
BUG_ON(!blk_fs_request(rq));
- rq->flags |= REQ_SORTED;
+ rq->cmd_flags |= REQ_SORTED;
q->nr_sorted++;
if (q->last_merge == NULL && rq_mergeable(rq))
q->last_merge = rq;
@@ -387,7 +387,7 @@ void elv_insert(request_queue_t *q, struct request *rq, int where)
* insertion; otherwise, requests should be requeued
* in ordseq order.
*/
- rq->flags |= REQ_SOFTBARRIER;
+ rq->cmd_flags |= REQ_SOFTBARRIER;
if (q->ordseq == 0) {
list_add(&rq->queuelist, &q->queue_head);
@@ -429,9 +429,9 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
int plug)
{
if (q->ordcolor)
- rq->flags |= REQ_ORDERED_COLOR;
+ rq->cmd_flags |= REQ_ORDERED_COLOR;
- if (rq->flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
+ if (rq->cmd_flags & (REQ_SOFTBARRIER | REQ_HARDBARRIER)) {
/*
* toggle ordered color
*/
@@ -452,7 +452,7 @@ void __elv_add_request(request_queue_t *q, struct request *rq, int where,
q->end_sector = rq_end_sector(rq);
q->boundary_rq = rq;
}
- } else if (!(rq->flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
+ } else if (!(rq->cmd_flags & REQ_ELVPRIV) && where == ELEVATOR_INSERT_SORT)
where = ELEVATOR_INSERT_BACK;
if (plug)
@@ -493,7 +493,7 @@ struct request *elv_next_request(request_queue_t *q)
int ret;
while ((rq = __elv_next_request(q)) != NULL) {
- if (!(rq->flags & REQ_STARTED)) {
+ if (!(rq->cmd_flags & REQ_STARTED)) {
elevator_t *e = q->elevator;
/*
@@ -510,7 +510,7 @@ struct request *elv_next_request(request_queue_t *q)
* it, a request that has been delayed should
* not be passed by new incoming requests
*/
- rq->flags |= REQ_STARTED;
+ rq->cmd_flags |= REQ_STARTED;
blk_add_trace_rq(q, rq, BLK_TA_ISSUE);
}
@@ -519,7 +519,7 @@ struct request *elv_next_request(request_queue_t *q)
q->boundary_rq = NULL;
}
- if ((rq->flags & REQ_DONTPREP) || !q->prep_rq_fn)
+ if ((rq->cmd_flags & REQ_DONTPREP) || !q->prep_rq_fn)
break;
ret = q->prep_rq_fn(q, rq);
@@ -541,7 +541,7 @@ struct request *elv_next_request(request_queue_t *q)
nr_bytes = rq->data_len;
blkdev_dequeue_request(rq);
- rq->flags |= REQ_QUIET;
+ rq->cmd_flags |= REQ_QUIET;
end_that_request_chunk(rq, 0, nr_bytes);
end_that_request_last(rq, 0);
} else {