--- /dev/null
+From c32cc30c0544f13982ee0185d55f4910319b1a79 Mon Sep 17 00:00:00 2001
+From: Masahiro Yamada <yamada.masahiro@socionext.com>
+Date: Thu, 11 Jul 2019 20:52:18 -0700
+Subject: nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header
+
+From: Masahiro Yamada <yamada.masahiro@socionext.com>
+
+commit c32cc30c0544f13982ee0185d55f4910319b1a79 upstream.
+
+cpu_to_le32/le32_to_cpu is defined in include/linux/byteorder/generic.h,
+which is not exported to user-space.
+
+UAPI headers must use the ones prefixed with double-underscore.
+
+Detected by compile-testing exported headers:
+
+ include/linux/nilfs2_ondisk.h: In function `nilfs_checkpoint_set_snapshot':
+ include/linux/nilfs2_ondisk.h:536:17: error: implicit declaration of function `cpu_to_le32' [-Werror=implicit-function-declaration]
+ cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | \
+ ^
+ include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS'
+ NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
+ ^~~~~~~~~~~~~~~~~~~~
+ include/linux/nilfs2_ondisk.h:536:29: error: implicit declaration of function `le32_to_cpu' [-Werror=implicit-function-declaration]
+ cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | \
+ ^
+ include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS'
+ NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
+ ^~~~~~~~~~~~~~~~~~~~
+ include/linux/nilfs2_ondisk.h: In function `nilfs_segment_usage_set_clean':
+ include/linux/nilfs2_ondisk.h:622:19: error: implicit declaration of function `cpu_to_le64' [-Werror=implicit-function-declaration]
+ su->su_lastmod = cpu_to_le64(0);
+ ^~~~~~~~~~~
+
+Link: http://lkml.kernel.org/r/20190605053006.14332-1-yamada.masahiro@socionext.com
+Fixes: e63e88bc53ba ("nilfs2: move ioctl interface and disk layout to uapi separately")
+Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
+Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
+Cc: Arnd Bergmann <arnd@arndb.de>
+Cc: Greg KH <gregkh@linuxfoundation.org>
+Cc: Joe Perches <joe@perches.com>
+Cc: <stable@vger.kernel.org> [4.9+]
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ include/uapi/linux/nilfs2_ondisk.h | 24 ++++++++++++------------
+ 1 file changed, 12 insertions(+), 12 deletions(-)
+
+--- a/include/uapi/linux/nilfs2_ondisk.h
++++ b/include/uapi/linux/nilfs2_ondisk.h
+@@ -28,7 +28,7 @@
+
+ #include <linux/types.h>
+ #include <linux/magic.h>
+-
++#include <asm/byteorder.h>
+
+ #define NILFS_INODE_BMAP_SIZE 7
+
+@@ -532,19 +532,19 @@ enum {
+ static inline void \
+ nilfs_checkpoint_set_##name(struct nilfs_checkpoint *cp) \
+ { \
+- cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | \
+- (1UL << NILFS_CHECKPOINT_##flag)); \
++ cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) | \
++ (1UL << NILFS_CHECKPOINT_##flag)); \
+ } \
+ static inline void \
+ nilfs_checkpoint_clear_##name(struct nilfs_checkpoint *cp) \
+ { \
+- cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) & \
++ cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) & \
+ ~(1UL << NILFS_CHECKPOINT_##flag)); \
+ } \
+ static inline int \
+ nilfs_checkpoint_##name(const struct nilfs_checkpoint *cp) \
+ { \
+- return !!(le32_to_cpu(cp->cp_flags) & \
++ return !!(__le32_to_cpu(cp->cp_flags) & \
+ (1UL << NILFS_CHECKPOINT_##flag)); \
+ }
+
+@@ -594,20 +594,20 @@ enum {
+ static inline void \
+ nilfs_segment_usage_set_##name(struct nilfs_segment_usage *su) \
+ { \
+- su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) | \
++ su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) | \
+ (1UL << NILFS_SEGMENT_USAGE_##flag));\
+ } \
+ static inline void \
+ nilfs_segment_usage_clear_##name(struct nilfs_segment_usage *su) \
+ { \
+ su->su_flags = \
+- cpu_to_le32(le32_to_cpu(su->su_flags) & \
++ __cpu_to_le32(__le32_to_cpu(su->su_flags) & \
+ ~(1UL << NILFS_SEGMENT_USAGE_##flag)); \
+ } \
+ static inline int \
+ nilfs_segment_usage_##name(const struct nilfs_segment_usage *su) \
+ { \
+- return !!(le32_to_cpu(su->su_flags) & \
++ return !!(__le32_to_cpu(su->su_flags) & \
+ (1UL << NILFS_SEGMENT_USAGE_##flag)); \
+ }
+
+@@ -618,15 +618,15 @@ NILFS_SEGMENT_USAGE_FNS(ERROR, error)
+ static inline void
+ nilfs_segment_usage_set_clean(struct nilfs_segment_usage *su)
+ {
+- su->su_lastmod = cpu_to_le64(0);
+- su->su_nblocks = cpu_to_le32(0);
+- su->su_flags = cpu_to_le32(0);
++ su->su_lastmod = __cpu_to_le64(0);
++ su->su_nblocks = __cpu_to_le32(0);
++ su->su_flags = __cpu_to_le32(0);
+ }
+
+ static inline int
+ nilfs_segment_usage_clean(const struct nilfs_segment_usage *su)
+ {
+- return !le32_to_cpu(su->su_flags);
++ return !__le32_to_cpu(su->su_flags);
+ }
+
+ /**