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| author | Tejun Heo <tj@kernel.org> | 2012-04-01 21:30:01 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-04-01 21:55:00 +0200 |
| commit | 959d851caa48829eb85cb85aa949fd6b4c5d5bc6 (patch) | |
| tree | 3ba9c94ec346275fb44c4f0d1cd2537cdff8d811 /block/blk-ioc.c | |
| parent | blkcg: change a spin_lock() to spin_lock_irq() (diff) | |
| parent | cgroup: make css->refcnt clearing on cgroup removal optional (diff) | |
| download | linux-959d851caa48829eb85cb85aa949fd6b4c5d5bc6.tar.xz linux-959d851caa48829eb85cb85aa949fd6b4c5d5bc6.zip | |
Merge branch 'for-3.5' of ../cgroup into block/for-3.5/core-merged
cgroup/for-3.5 contains the following changes which blk-cgroup needs
to proceed with the on-going cleanup.
* Dynamic addition and removal of cftypes to make config/stat file
handling modular for policies.
* cgroup removal update to not wait for css references to drain to fix
blkcg removal hang caused by cfq caching cfqgs.
Pull in cgroup/for-3.5 into block/for-3.5/core. This causes the
following conflicts in block/blk-cgroup.c.
* 761b3ef50e "cgroup: remove cgroup_subsys argument from callbacks"
conflicts with blkiocg_pre_destroy() addition and blkiocg_attach()
removal. Resolved by removing @subsys from all subsys methods.
* 676f7c8f84 "cgroup: relocate cftype and cgroup_subsys definitions in
controllers" conflicts with ->pre_destroy() and ->attach() updates
and removal of modular config. Resolved by dropping forward
declarations of the methods and applying updates to the relocated
blkio_subsys.
* 4baf6e3325 "cgroup: convert all non-memcg controllers to the new
cftype interface" builds upon the previous item. Resolved by adding
->base_cftypes to the relocated blkio_subsys.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'block/blk-ioc.c')
| -rw-r--r-- | block/blk-ioc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-ioc.c b/block/blk-ioc.c index 3f3dd51a1280..1e2d53b04858 100644 --- a/block/blk-ioc.c +++ b/block/blk-ioc.c @@ -130,6 +130,7 @@ static void ioc_release_fn(struct work_struct *work) void put_io_context(struct io_context *ioc) { unsigned long flags; + bool free_ioc = false; if (ioc == NULL) return; @@ -144,8 +145,13 @@ void put_io_context(struct io_context *ioc) spin_lock_irqsave(&ioc->lock, flags); if (!hlist_empty(&ioc->icq_list)) schedule_work(&ioc->release_work); + else + free_ioc = true; spin_unlock_irqrestore(&ioc->lock, flags); } + + if (free_ioc) + kmem_cache_free(iocontext_cachep, ioc); } EXPORT_SYMBOL(put_io_context); |