[Xen-changelog] [xen-unstable] io: make shared ring pad field less enticing for users by adding a __ prefix

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1278093508 -3600
# Node ID a8c5e5e12ec1a987a33da6be9234f6e78f87060a
# Parent  feee0abed6aa75134c47ba1b712305c871e0669e
io: make shared ring pad field less enticing for users by adding a __ prefix

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Cc: Daniel Stodden <daniel.stodden@xxxxxxxxxx>
Cc: Dongxiao Xu <dongxiao.xu@xxxxxxxxx>
---
 xen/include/public/io/ring.h |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff -r feee0abed6aa -r a8c5e5e12ec1 xen/include/public/io/ring.h
--- a/xen/include/public/io/ring.h      Fri Jul 02 18:58:02 2010 +0100
+++ b/xen/include/public/io/ring.h      Fri Jul 02 18:58:28 2010 +0100
@@ -112,7 +112,7 @@ struct __name##_sring {                 
         } tapif_user;                                                   \
         uint8_t pvt_pad[4];                                             \
     } private;                                                          \
-    uint8_t pad[44];                                                    \
+    uint8_t __pad[44];                                                  \
     union __name##_sring_entry ring[1]; /* variable-length */           \
 };                                                                      \
                                                                         \
@@ -156,7 +156,8 @@ typedef struct __name##_back_ring __name
 #define SHARED_RING_INIT(_s) do {                                       \
     (_s)->req_prod  = (_s)->rsp_prod  = 0;                              \
     (_s)->req_event = (_s)->rsp_event = 1;                              \
-    (void)memset((_s)->pad, 0, sizeof((_s)->pad));                      \
+    (void)memset((_s)->private.pvt_pad, 0, sizeof((_s)->private.pvt_pad)); \
+    (void)memset((_s)->__pad, 0, sizeof((_s)->__pad));                  \
 } while(0)
 
 #define FRONT_RING_INIT(_r, _s, __size) do {                            \

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