kill getname_statx_lookup_flags()

LOOKUP_EMPTY is ignored by the only remaining user, and without
that 'getname_' prefix makes no sense.

Remove LOOKUP_EMPTY part, rename to statx_lookup_flags() and make
static.  It most likely is _not_ statx() specific, either, but
that's the next step.

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/internal.h

@@ -246,7 +246,6 @@ int open_namespace(struct ns_common *ns);
  * fs/stat.c:
  */
 
-int getname_statx_lookup_flags(int flags);
 int do_statx(int dfd, struct filename *filename, unsigned int flags,
 	     unsigned int mask, struct statx __user *buffer);
 int do_statx_fd(int fd, unsigned int flags, unsigned int mask,

fs/stat.c

@@ -231,16 +231,14 @@ int vfs_fstat(int fd, struct kstat *stat)
 	return error;
 }
 
-int getname_statx_lookup_flags(int flags)
+static int statx_lookup_flags(int flags)
 {
 	int lookup_flags = 0;
 
 	if (!(flags & AT_SYMLINK_NOFOLLOW))
 		lookup_flags |= LOOKUP_FOLLOW;
 	if (!(flags & AT_NO_AUTOMOUNT))
 		lookup_flags |= LOOKUP_AUTOMOUNT;
-	if (flags & AT_EMPTY_PATH)
-		lookup_flags |= LOOKUP_EMPTY;
 
 	return lookup_flags;
 }
@@ -301,7 +299,7 @@ static int vfs_statx(int dfd, struct filename *filename, int flags,
 	      struct kstat *stat, u32 request_mask)
 {
 	struct path path;
-	unsigned int lookup_flags = getname_statx_lookup_flags(flags);
+	unsigned int lookup_flags = statx_lookup_flags(flags);
 	int error;
 
 	if (flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT | AT_EMPTY_PATH |