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| author | Shaohua Li <shaohua.li@intel.com> | 2011-06-27 09:03:48 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-06-27 09:36:06 +0200 |
| commit | 726e99ab88db059fe1422e15376ae404f8c66eb4 (patch) | |
| tree | 8d9373239aa568f28631e253d9fd07bc78b312c3 | |
| parent | 3181faa85bda3dc3f5e630a1846526c9caaa38e3 (diff) | |
| download | kernel-common-726e99ab88db059fe1422e15376ae404f8c66eb4.tar.gz kernel-common-726e99ab88db059fe1422e15376ae404f8c66eb4.tar.bz2 kernel-common-726e99ab88db059fe1422e15376ae404f8c66eb4.zip | |
cfq-iosched: make code consistent
ioc->ioc_data is rcu protectd, so uses correct API to access it.
This doesn't change any behavior, but just make code consistent.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: stable@kernel.org # after ab4bd22d
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| -rw-r--r-- | block/cfq-iosched.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index fd566c1e2617..ae21919f15e1 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3087,7 +3087,8 @@ cfq_drop_dead_cic(struct cfq_data *cfqd, struct io_context *ioc, spin_lock_irqsave(&ioc->lock, flags); - BUG_ON(ioc->ioc_data == cic); + BUG_ON(rcu_dereference_check(ioc->ioc_data, + lockdep_is_held(&ioc->lock)) == cic); radix_tree_delete(&ioc->radix_root, cfqd->cic_index); hlist_del_rcu(&cic->cic_list); |