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authorTejun Heo <tj@kernel.org>2011-12-14 03:33:42 +0400
committerJens Axboe <axboe@kernel.dk>2011-12-14 03:33:42 +0400
commit9b84cacd013996f244d85b3d873287c2a8f88658 (patch)
treea11b850f9c8b182a7a8141276244a831aaae5291 /include/linux/elevator.h
parent7e5a8794492e43e9eebb68a98a23be055888ccd0 (diff)
downloadlinux-9b84cacd013996f244d85b3d873287c2a8f88658.tar.xz
block, cfq: restructure io_cq creation path for io_context interface cleanup
Add elevator_ops->elevator_init_icq_fn() and restructure cfq_create_cic() and rename it to ioc_create_icq(). The new function expects its caller to pass in io_context, uses elevator_type->icq_cache, handles generic init, calls the new elevator operation for elevator specific initialization, and returns pointer to created or looked up icq. This leaves cfq_icq_pool variable without any user. Removed. This prepares for io_context interface cleanup and doesn't introduce any functional difference. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/elevator.h')
-rw-r--r--include/linux/elevator.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 06e4dd568717..c8f1e67a8ebe 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -26,6 +26,7 @@ typedef struct request *(elevator_request_list_fn) (struct request_queue *, stru
typedef void (elevator_completed_req_fn) (struct request_queue *, struct request *);
typedef int (elevator_may_queue_fn) (struct request_queue *, int);
+typedef void (elevator_init_icq_fn) (struct io_cq *);
typedef void (elevator_exit_icq_fn) (struct io_cq *);
typedef int (elevator_set_req_fn) (struct request_queue *, struct request *, gfp_t);
typedef void (elevator_put_req_fn) (struct request *);
@@ -59,6 +60,7 @@ struct elevator_ops
elevator_request_list_fn *elevator_former_req_fn;
elevator_request_list_fn *elevator_latter_req_fn;
+ elevator_init_icq_fn *elevator_init_icq_fn;
elevator_exit_icq_fn *elevator_exit_icq_fn;
elevator_set_req_fn *elevator_set_req_fn;