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intel-iommu: Remove superfluous iova_alloc_lock from IOVA code

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We only ever obtain this lock immediately before the iova_rbtree_lock,
and release it immediately after the iova_rbtree_lock. So ditch it and
just use iova_rbtree_lock.

[v2: Remove the lockdep bits this time too]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-07-08 15:23:30 +01:00
parent 147202aa77
commit 3d39cecc48
3 changed files with 4 additions and 16 deletions
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1
include/linux/iova.h
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@ -28,7 +28,6 @@ struct iova {
/* holds all the iova translations for a domain */
struct iova_domain {
spinlock_t iova_alloc_lock;/* Lock to protect iova allocation */
spinlock_t iova_rbtree_lock; /* Lock to protect update of rbtree */
struct rb_root rbroot; /* iova domain rbtree root */
struct rb_node *cached32_node; /* Save last alloced node */