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authorMichel Lespinasse <walken@google.com>2012-10-08 16:31:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-09 16:22:40 +0900
commit9826a516ff77c5820e591211e4f3e58ff36f46be (patch)
treebdec1e2fe5ff95569795069bac73977faba17d57 /lib
parent9c079add0d0f45220f4bb37febf0621137ec2d38 (diff)
downloadvexpress-lsk-9826a516ff77c5820e591211e4f3e58ff36f46be.tar.gz
mm: interval tree updates
Update the generic interval tree code that was introduced in "mm: replace vma prio_tree with an interval tree". Changes: - fixed 'endpoing' typo noticed by Andrew Morton - replaced include/linux/interval_tree_tmpl.h, which was used as a template (including it automatically defined the interval tree functions) with include/linux/interval_tree_generic.h, which only defines a preprocessor macro INTERVAL_TREE_DEFINE(), which itself defines the interval tree functions when invoked. Now that is a very long macro which is unfortunate, but it does make the usage sites (lib/interval_tree.c and mm/interval_tree.c) a bit nicer than previously. - make use of RB_DECLARE_CALLBACKS() in the INTERVAL_TREE_DEFINE() macro, instead of duplicating that code in the interval tree template. - replaced vma_interval_tree_add(), which was actually handling the nonlinear and interval tree cases, with vma_interval_tree_insert_after() which handles only the interval tree case and has an API that is more consistent with the other interval tree handling functions. The nonlinear case is now handled explicitly in kernel/fork.c dup_mmap(). Signed-off-by: Michel Lespinasse <walken@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Daniel Santos <daniel.santos@pobox.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/interval_tree.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/interval_tree.c b/lib/interval_tree.c
index 77a793e0644..e6eb406f2d6 100644
--- a/lib/interval_tree.c
+++ b/lib/interval_tree.c
@@ -1,13 +1,10 @@
#include <linux/init.h>
#include <linux/interval_tree.h>
+#include <linux/interval_tree_generic.h>
-#define ITSTRUCT struct interval_tree_node
-#define ITRB rb
-#define ITTYPE unsigned long
-#define ITSUBTREE __subtree_last
-#define ITSTART(n) ((n)->start)
-#define ITLAST(n) ((n)->last)
-#define ITSTATIC
-#define ITPREFIX interval_tree
+#define START(node) ((node)->start)
+#define LAST(node) ((node)->last)
-#include <linux/interval_tree_tmpl.h>
+INTERVAL_TREE_DEFINE(struct interval_tree_node, rb,
+ unsigned long, __subtree_last,
+ START, LAST,, interval_tree)