commit d6ec084200c37683278c821338f74ddf21ab80f5
author Jens Axboe <jens.axboe@oracle.com> Mon Oct 22 20:01:06 2007 +0200
committer Jens Axboe <jens.axboe@oracle.com> Mon Oct 22 21:20:03 2007 +0200
tree 931a112061e3a861768384b8b6ea20fdd35bd41b
parent 18dabf473e15850c0dbc8ff13ac1e2806d542c15

Add CONFIG_DEBUG_SG sg validation

Add a Kconfig entry which will toggle some sanity checks on the sg
entry and tables.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

include/asm-m32r/scatterlist.h

diff --git a/include/asm-m32r/scatterlist.h b/include/asm-m32r/scatterlist.h
index 33b4b4d..1ed372c 100644
--- a/include/asm-m32r/scatterlist.h
+++ b/include/asm-m32r/scatterlist.h
@@ -4,6 +4,9 @@
 #include <asm/types.h>
 
 struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+    unsigned long sg_magic;
+#endif
     char *  address;    /* Location data is to be transferred to, NULL for
                          * highmem page */
     unsigned long page_link;