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authorIngo Molnar <mingo@kernel.org>2012-06-20 14:22:32 +0200
committerIngo Molnar <mingo@kernel.org>2012-06-20 14:22:34 +0200
commit6a991acceedce3ca93caef8ba7af2468c9451614 (patch)
tree1997d71fc57bdebd12fc70a73070281614b52f15 /lib/radix-tree.c
parent70fb74a5420f9caa3e001d65004e4b669124283e (diff)
parent485802a6c524e62b5924849dd727ddbb1497cc71 (diff)
Merge commit 'v3.5-rc3' into x86/debug
Merge it in to pick up a fix that we are going to clean up in this branch. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/radix-tree.c')
-rw-r--r--lib/radix-tree.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index d7c878cc006c..e7964296fd50 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -686,6 +686,9 @@ void **radix_tree_next_chunk(struct radix_tree_root *root,
* during iterating; it can be zero only at the beginning.
* And we cannot overflow iter->next_index in a single step,
* because RADIX_TREE_MAP_SHIFT < BITS_PER_LONG.
+ *
+ * This condition also used by radix_tree_next_slot() to stop
+ * contiguous iterating, and forbid swithing to the next chunk.
*/
index = iter->next_index;
if (!index && iter->index)