git: 9d4303dbe2c4 - stable/13 - rb_tree: fix stable/13 linux/rbtree.h post ABI fix

The branch stable/13 has been updated by dougm:

URL: https://cgit.FreeBSD.org/src/commit/?id=9d4303dbe2c4a901418657ed09c9f7096756e8b3

commit 9d4303dbe2c4a901418657ed09c9f7096756e8b3
Author:     Doug Moore <dougm@FreeBSD.org>
AuthorDate: 2022-12-19 22:03:13 +0000
Commit:     Doug Moore <dougm@FreeBSD.org>
CommitDate: 2022-12-19 22:03:13 +0000

    rb_tree: fix stable/13 linux/rbtree.h post ABI fix
    
    Rearranging the left, right, and parent pointers for backward
    compatibility with stable/13 in
    d8a88ec381498f5942403088d28ee325b92e9a78 is incomplete because it does
    not change linux/rbtree.h so that it too knows how rb_left and
    rb_right are redefined. So complete it.
    
    Reported by:    jon_xyinn.org, jgibbons@protogate.org
    Tested by:      manu, jon_xyinn.org
    Differential Revision:  https://reviews.freebsd.org/D37743
---
 sys/compat/linuxkpi/common/include/linux/rbtree.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/compat/linuxkpi/common/include/linux/rbtree.h b/sys/compat/linuxkpi/common/include/linux/rbtree.h
index de21f0e4c613..bd2589392bf1 100644
--- a/sys/compat/linuxkpi/common/include/linux/rbtree.h
+++ b/sys/compat/linuxkpi/common/include/linux/rbtree.h
@@ -41,8 +41,8 @@
 struct rb_node {
 	RB_ENTRY(rb_node)	__entry;
 };
-#define	rb_left		__entry.rbe_link[_RB_L]
-#define	rb_right	__entry.rbe_link[_RB_R]
+#define	rb_left		__entry.rbe_link[_RB_L-1]
+#define	rb_right	__entry.rbe_link[_RB_R-1]
 
 /*
  * We provide a false structure that has the same bit pattern as tree.h