diff options
| author | Jens Axboe <axboe@suse.de> | 2003-04-06 18:29:36 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@suse.de> | 2003-04-06 18:29:36 -0700 |
| commit | 68132d898b0a59334b55e95f646173f6efc3e75b (patch) | |
| tree | 86da610ae6d830a3a9cb5f7d84650f3ee3006347 /include/linux/blkdev.h | |
| parent | a5509daebfeda15fdb0fa06c1ea36247110564ef (diff) | |
[PATCH] kill blk_queue_empty()
This finally kills of blk_queue_empty(). This is similar to the patch I
recently sent to fix the SCSI logic as well. A lot of drivers are doing
this in our core, mainly because that is the way they always did it:
start_queue:
if (blk_queue_empty(q))
return;
rq = elv_next_request(q);
if (!rq)
return;
Patch simply removes the blk_queue_empty() check, and adds a check for
!rq return from elv_next_request() if the driver didn't already do that.
Additionally, the AS io scheduler can return NULL from
elv_next_request() if it thinks this is best. This way we are also
prepared for that to work well.
Patch was done by Nick Piggin.
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b5a2f676c4f8..ee3f66a5e60c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -260,7 +260,6 @@ struct request_queue #define blk_queue_plugged(q) !list_empty(&(q)->plug_list) #define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags) -#define blk_queue_empty(q) elv_queue_empty(q) #define blk_fs_request(rq) ((rq)->flags & REQ_CMD) #define blk_pc_request(rq) ((rq)->flags & REQ_BLOCK_PC) #define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist) |