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author | 2013-07-11 13:03:24 -0700 | |
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committer | 2013-07-11 13:03:24 -0700 | |
commit | 36805aaea5ae3cf1bb32f1643e0a800bb69f0d5b (patch) | |
tree | 5565132549a0733772b3a2ac6b5cda516ea8cdce /include | |
parent | Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/... (diff) | |
parent | elevator: Fix a race in elevator switching (diff) | |
download | linux-36805aaea5ae3cf1bb32f1643e0a800bb69f0d5b.tar.gz linux-36805aaea5ae3cf1bb32f1643e0a800bb69f0d5b.tar.bz2 linux-36805aaea5ae3cf1bb32f1643e0a800bb69f0d5b.zip |
Merge branch 'for-3.11/core' of git://git.kernel.dk/linux-block
Pull core block IO updates from Jens Axboe:
"Here are the core IO block bits for 3.11. It contains:
- A tweak to the reserved tag logic from Jan, for weirdo devices with
just 3 free tags. But for those it improves things substantially
for random writes.
- Periodic writeback fix from Jan. Marked for stable as well.
- Fix for a race condition in IO scheduler switching from Jianpeng.
- The hierarchical blk-cgroup support from Tejun. This is the grunt
of the series.
- blk-throttle fix from Vivek.
Just a note that I'm in the middle of a relocation, whole family is
flying out tomorrow. Hence I will be awal the remainder of this week,
but back at work again on Monday the 15th. CC'ing Tejun, since any
potential "surprises" will most likely be from the blk-cgroup work.
But it's been brewing for a while and sitting in my tree and
linux-next for a long time, so should be solid."
* 'for-3.11/core' of git://git.kernel.dk/linux-block: (36 commits)
elevator: Fix a race in elevator switching
block: Reserve only one queue tag for sync IO if only 3 tags are available
writeback: Fix periodic writeback after fs mount
blk-throttle: implement proper hierarchy support
blk-throttle: implement throtl_grp->has_rules[]
blk-throttle: Account for child group's start time in parent while bio climbs up
blk-throttle: add throtl_qnode for dispatch fairness
blk-throttle: make throtl_pending_timer_fn() ready for hierarchy
blk-throttle: make tg_dispatch_one_bio() ready for hierarchy
blk-throttle: make blk_throtl_bio() ready for hierarchy
blk-throttle: make blk_throtl_drain() ready for hierarchy
blk-throttle: dispatch from throtl_pending_timer_fn()
blk-throttle: implement dispatch looping
blk-throttle: separate out throtl_service_queue->pending_timer from throtl_data->dispatch_work
blk-throttle: set REQ_THROTTLED from throtl_charge_bio() and gate stats update with it
blk-throttle: implement sq_to_tg(), sq_to_td() and throtl_log()
blk-throttle: add throtl_service_queue->parent_sq
blk-throttle: generalize update_disptime optimization in blk_throtl_bio()
blk-throttle: dispatch to throtl_data->service_queue.bio_lists[]
blk-throttle: move bio_lists[] and friends to throtl_service_queue
...
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/cgroup.h | 2 | ||||
-rw-r--r-- | include/linux/elevator.h | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index fd097ecfcd97..297462b9f41a 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -278,6 +278,8 @@ enum { * * - memcg: use_hierarchy is on by default and the cgroup file for * the flag is not created. + * + * - blkcg: blk-throttle becomes properly hierarchical. */ CGRP_ROOT_SANE_BEHAVIOR = (1 << 0), diff --git a/include/linux/elevator.h b/include/linux/elevator.h index acd0312d46fb..306dd8cd0b6f 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -7,6 +7,7 @@ #ifdef CONFIG_BLOCK struct io_cq; +struct elevator_type; typedef int (elevator_merge_fn) (struct request_queue *, struct request **, struct bio *); @@ -35,7 +36,8 @@ typedef void (elevator_put_req_fn) (struct request *); typedef void (elevator_activate_req_fn) (struct request_queue *, struct request *); typedef void (elevator_deactivate_req_fn) (struct request_queue *, struct request *); -typedef int (elevator_init_fn) (struct request_queue *); +typedef int (elevator_init_fn) (struct request_queue *, + struct elevator_type *e); typedef void (elevator_exit_fn) (struct elevator_queue *); struct elevator_ops @@ -155,6 +157,8 @@ extern int elevator_init(struct request_queue *, char *); extern void elevator_exit(struct elevator_queue *); extern int elevator_change(struct request_queue *, const char *); extern bool elv_rq_merge_ok(struct request *, struct bio *); +extern struct elevator_queue *elevator_alloc(struct request_queue *, + struct elevator_type *); /* * Helper functions. |