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[PATCH] Change __ASSUME_ACCEPT4 on powerpc to 2.6.37


In Debian, we currently build with a minimum kernel version of 2.6.32
for backward compat with squeeze, lucid, and RHEL6.  __ASSUME_ACCEPT4
is enabled for kernel versions >= 2.6.28 on x86, sparc, powerpc, and
s390, however this wasn't actually exported on powerpc until 2.6.37ish
in commit 86250b9d12caa1a3dee12a7cf638b7dd70eaadb6:

$ git tag --contains 86250b9d12caa1a3dee12a7cf638b7dd70eaadb6 | grep -v rc
v2.6.37
v2.6.38
v2.6.39
v3.0
v3.1
[...]

In light of this, I'm proposing the following simple commit.

... Adam

- snip -

	* sysdeps/unix/sysv/linux/kernel-features.h: Restrict accept4 on
	powerpc to kernels >= 2.6.37.
 
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index ccd4c59..6a6a2dd 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -166,11 +166,16 @@
 
 /* Support for the accept4 syscall was added in 2.6.28.  */
 #if __LINUX_KERNEL_VERSION >= 0x02061c \
-    && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \
+    && (defined __i386__ || defined __x86_64__ \
 	|| defined __sparc__ || defined __s390__)
 # define __ASSUME_ACCEPT4	1
 #endif
 
+/* Support for the accept4 syscall was added in 2.6.37 on powerpc.  */
+#if __LINUX_KERNEL_VERSION >= 0x020625 && defined __powerpc__
+# define __ASSUME_ACCEPT4	1
+#endif
+
 /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29.  */
 #if __LINUX_KERNEL_VERSION >= 0x02061d
 # define __ASSUME_FUTEX_CLOCK_REALTIME	1


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