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authorIngo Molnar <mingo@elte.hu>2008-12-03 12:54:45 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-03 12:54:45 +0100
commitc36910c147fd7b129a8f1269c76b9767c99de5cd (patch)
tree29403cd341b62581718f6b34944271980fb133e6 /include/linux/idr.h
parent70d7d357578245f1993fd2d3ccd26088bcd38941 (diff)
parent09ee17eb8ea89514c13980c4010bdbbaea8630c2 (diff)
Merge branch 'iommu-fixes-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
Diffstat (limited to 'include/linux/idr.h')
-rw-r--r--include/linux/idr.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h
index fa035f96f2a3..dd846df8cd32 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -52,13 +52,14 @@ struct idr_layer {
unsigned long bitmap; /* A zero bit means "space here" */
struct idr_layer *ary[1<<IDR_BITS];
int count; /* When zero, we can release it */
+ int layer; /* distance from leaf */
struct rcu_head rcu_head;
};
struct idr {
struct idr_layer *top;
struct idr_layer *id_free;
- int layers;
+ int layers; /* only valid without concurrent changes */
int id_free_cnt;
spinlock_t lock;
};