The patch titled
     Subject: xattr: fix check for simultaneous glibc header inclusion
has been added to the -mm tree.  Its filename is
     xattr-fix-check-for-simultaneous-glibc-header-inclusion.patch

This patch should soon appear at
    
http://ozlabs.org/~akpm/mmots/broken-out/xattr-fix-check-for-simultaneous-glibc-header-inclusion.patch
and later at
    
http://ozlabs.org/~akpm/mmotm/broken-out/xattr-fix-check-for-simultaneous-glibc-header-inclusion.patch

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------------------------------------------------------
From: Filipe Brandenburger <[email protected]>
Subject: xattr: fix check for simultaneous glibc header inclusion

The guard was introduced in ea1a8217b06b41 ("xattr: guard against
simultaneous glibc header inclusion") but it is using #ifdef to check for
a define that is either set to 1 or 0.  Fix it to use #if instead.

* Without this patch:
  $ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc 
-E -Iinclude/uapi - >/dev/null
  include/uapi/linux/xattr.h:19:0: warning: "XATTR_CREATE" redefined [enabled 
by default]
   #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
   ^
  /usr/include/x86_64-linux-gnu/sys/xattr.h:32:0: note: this is the location of 
the previous definition
   #define XATTR_CREATE XATTR_CREATE
   ^

* With this patch:
  $ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc 
-E -Iinclude/uapi - >/dev/null
  (no warnings)

Signed-off-by: Filipe Brandenburger <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: Allan McRae <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 include/uapi/linux/xattr.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN 
include/uapi/linux/xattr.h~xattr-fix-check-for-simultaneous-glibc-header-inclusion
 include/uapi/linux/xattr.h
--- 
a/include/uapi/linux/xattr.h~xattr-fix-check-for-simultaneous-glibc-header-inclusion
+++ a/include/uapi/linux/xattr.h
@@ -13,7 +13,7 @@
 #ifndef _UAPI_LINUX_XATTR_H
 #define _UAPI_LINUX_XATTR_H
 
-#ifdef __UAPI_DEF_XATTR
+#if __UAPI_DEF_XATTR
 #define __USE_KERNEL_XATTR_DEFS
 
 #define XATTR_CREATE   0x1     /* set value, fail if attr already exists */
_

Patches currently in -mm which might be from [email protected] are

xattr-fix-check-for-simultaneous-glibc-header-inclusion.patch

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