From: Jeff Mahoney <jeffm@suse.com>
Subject: mkfs: allow site to override defaults
Patch-mainline: Never, a real solution with a config file is required
References: FATE#320615

This is a simple method to allow us to set site defaults for mkfs by
adding -include <includefile> to cflags.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
 utils.h |    4 ++++
 1 file changed, 4 insertions(+)

Index: btrfs-progs-v4.10.2/fsfeatures.h
===================================================================
--- btrfs-progs-v4.10.2.orig/fsfeatures.h
+++ btrfs-progs-v4.10.2/fsfeatures.h
@@ -19,10 +19,14 @@
 
 #include "kerncompat.h"
 
+#ifndef BTRFS_MKFS_DEFAULT_NODE_SIZE
 #define BTRFS_MKFS_DEFAULT_NODE_SIZE SZ_16K
+#endif
+#ifndef BTRFS_MKFS_DEFAULT_FEATURES
 #define BTRFS_MKFS_DEFAULT_FEATURES 				\
 		(BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF		\
 		| BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA)
+#endif
 
 /*
  * Avoid multi-device features (RAID56) and mixed block groups