From: Masahiro Yamada yamada.masahiro@socionext.com Subject: nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header

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:

./usr/include/linux/nilfs2_ondisk.h: In function `nilfs_checkpoint_set_snapshot': ./usr/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) | \ ^ ./usr/include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS' NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot) ^~~~~~~~~~~~~~~~~~~~ ./usr/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) | \ ^ ./usr/include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS' NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot) ^~~~~~~~~~~~~~~~~~~~ ./usr/include/linux/nilfs2_ondisk.h: In function `nilfs_segment_usage_set_clean': ./usr/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.co... 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 ---

include/uapi/linux/nilfs2_ondisk.h | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-)

--- a/include/uapi/linux/nilfs2_ondisk.h~nilfs2-do-not-use-unexported-cpu_to_le32-le32_to_cpu-in-uapi-header +++ a/include/uapi/linux/nilfs2_ondisk.h @@ -29,7 +29,7 @@

#include <linux/types.h> #include <linux/magic.h> - +#include <asm/byteorder.h>

#define NILFS_INODE_BMAP_SIZE 7

@@ -533,19 +533,19 @@ 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)); \ }

@@ -595,20 +595,20 @@ 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 +619,15 @@ 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); }

/** _