fs: move vfs_fstatat out of line

This allows to keep vfs_statx static in fs/stat.c to prepare for the following
changes.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

fs/stat.c

@@ -181,7 +181,7 @@ static inline unsigned vfs_stat_set_lookup_flags(unsigned *lookup_flags,
  *
  * 0 will be returned on success, and a -ve error code if unsuccessful.
  */
-int vfs_statx(int dfd, const char __user *filename, int flags,
+static int vfs_statx(int dfd, const char __user *filename, int flags,
 	      struct kstat *stat, u32 request_mask)
 {
 	struct path path;
@@ -209,8 +209,13 @@ int vfs_statx(int dfd, const char __user *filename, int flags,
 out:
 	return error;
 }
-EXPORT_SYMBOL(vfs_statx);
 
+int vfs_fstatat(int dfd, const char __user *filename,
+			      struct kstat *stat, int flags)
+{
+	return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
+			 stat, STATX_BASIC_STATS);
+}
 
 #ifdef __ARCH_WANT_OLD_STAT
 

include/linux/fs.h

@@ -3162,15 +3162,10 @@ extern const struct inode_operations simple_symlink_inode_operations;
 
 extern int iterate_dir(struct file *, struct dir_context *);
 
-extern int vfs_statx(int, const char __user *, int, struct kstat *, u32);
+int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat,
+		int flags);
 int vfs_fstat(int fd, struct kstat *stat);
 
-static inline int vfs_fstatat(int dfd, const char __user *filename,
-			      struct kstat *stat, int flags)
-{
-	return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
-			 stat, STATX_BASIC_STATS);
-}
 static inline int vfs_stat(const char __user *filename, struct kstat *stat)
 {
 	return vfs_fstatat(AT_FDCWD, filename, stat, 0);