[PATCH 1/6] ext4: Move is_32bit_api() to generic code

[Richard Weinberger <richard@nod.at>]

Since UBIFS will also use this function, move it to compat.h.

Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
---
 fs/ext4/dir.c          | 9 ---------
 include/linux/compat.h | 2 ++
 2 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index e8b365000d73..464e6e99d744 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -290,15 +290,6 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
 	return err;
 }
 
-static inline int is_32bit_api(void)
-{
-#ifdef CONFIG_COMPAT
-	return in_compat_syscall();
-#else
-	return (BITS_PER_LONG == 32);
-#endif
-}
-
 /*
  * These functions convert from the major/minor hash to an f_pos
  * value for dx directories
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 1c5f3152cbb5..f33ffd8040a1 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -736,6 +736,7 @@ asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2);
 #ifndef in_compat_syscall
 static inline bool in_compat_syscall(void) { return is_compat_task(); }
 #endif
+static inline int is_32bit_api(void) { return in_compat_syscall(); }
 
 /**
  * ns_to_compat_timeval - Compat version of ns_to_timeval
@@ -759,6 +760,7 @@ static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
 
 #define is_compat_task() (0)
 static inline bool in_compat_syscall(void) { return false; }
+static inline int is_32bit_api(void) { return BITS_PER_LONG == 32; }
 
 #endif /* CONFIG_COMPAT */
 
-- 
2.12.0