nilfs2 exports a load of inline functions to userspace that call kernel
byteswapping functions that don't exist in UAPI.  Fix this by making it
#include asm/byteorder.h and use the functions declared there.

A better way is probably to remove these inline functions from the nilfs2
header since they are technically broken.

Signed-off-by: David Howells <dhowe...@redhat.com>
cc: Ryusuke Konishi <konishi.ryus...@lab.ntt.co.jp>
cc: linux-ni...@vger.kernel.org
cc: linux-fsde...@vger.kernel.org
---

 include/uapi/linux/nilfs2_ondisk.h |   21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/include/uapi/linux/nilfs2_ondisk.h 
b/include/uapi/linux/nilfs2_ondisk.h
index a7e66ab11d1d..d3bd2fe08791 100644
--- a/include/uapi/linux/nilfs2_ondisk.h
+++ b/include/uapi/linux/nilfs2_ondisk.h
@@ -29,6 +29,7 @@
 
 #include <linux/types.h>
 #include <linux/magic.h>
+#include <asm/byteorder.h>
 
 
 #define NILFS_INODE_BMAP_SIZE  7
@@ -533,19 +534,19 @@ enum {
 static inline void                                                     \
 nilfs_checkpoint_set_##name(struct nilfs_checkpoint *cp)               \
 {                                                                      \
-       cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) |          \
+       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));                    \
 }
 
@@ -595,20 +596,20 @@ 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));                 \
 }
 
@@ -619,15 +620,15 @@ 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);
 }
 
 /**

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