statx: hide interfaces no longer used by io_uring

to #28736503

commit 6f88cc176a3358c54bb6c38c8afee3f3a42faf54 upstream

The io_uring interfaces have been replaced by do_statx() and are no
longer needed.
Signed-off-by: NBijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Signed-off-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>

fs/internal.h

@@ -200,7 +200,5 @@ int sb_init_dio_done_wq(struct super_block *sb);
 /*
  * fs/stat.c:
  */
-unsigned vfs_stat_set_lookup_flags(unsigned *lookup_flags, int flags);
-int cp_statx(const struct kstat *stat, struct statx __user *buffer);
 int do_statx(int dfd, const char __user *filename, unsigned flags,
 	     unsigned int mask, struct statx __user *buffer);

fs/stat.c

@@ -150,7 +150,8 @@ int vfs_statx_fd(unsigned int fd, struct kstat *stat,
 }
 EXPORT_SYMBOL(vfs_statx_fd);
 
-inline unsigned vfs_stat_set_lookup_flags(unsigned *lookup_flags, int flags)
+static inline unsigned vfs_stat_set_lookup_flags(unsigned *lookup_flags,
+						 int flags)
 {
 	if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
 		       AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0)
@@ -528,7 +529,7 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, const char __user *, filename,
 }
 #endif /* __ARCH_WANT_STAT64 || __ARCH_WANT_COMPAT_STAT64 */
 
-noinline_for_stack int
+static noinline_for_stack int
 cp_statx(const struct kstat *stat, struct statx __user *buffer)
 {
 	struct statx tmp;