[PATCH] tmpfs: fix typos.

In adjust_used, get_used functions use tmpfs_space_used instead of num_files
---
 tmpfs/tmpfs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tmpfs/tmpfs.h b/tmpfs/tmpfs.h
index 4055455..aed13e8 100644
--- a/tmpfs/tmpfs.h
+++ b/tmpfs/tmpfs.h
@@ -80,14 +80,14 @@ extern off_t tmpfs_space_used;
 static inline void
 adjust_used (off_t change)
 {
-  __atomic_add_fetch (&num_files, change, __ATOMIC_RELAXED);
+  __atomic_add_fetch (&tmpfs_space_used, change, __ATOMIC_RELAXED);
 }
 
 /* Convenience function to get tmpfs_space_used.  */
 static inline off_t
 get_used (void)
 {
-  return __atomic_load_n (&num_files, __ATOMIC_RELAXED);
+  return __atomic_load_n (&tmpfs_space_used, __ATOMIC_RELAXED);
 }
 
 #endif
-- 
2.47.3