Properly protect already-allocated file list
We need proper locking around it for thread based setups.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/filehash.h b/filehash.h
index 993943a..f316b20 100644
--- a/filehash.h
+++ b/filehash.h
@@ -8,5 +8,7 @@
extern struct fio_file *lookup_file_hash(const char *);
extern struct fio_file *add_file_hash(struct fio_file *);
extern void remove_file_hash(struct fio_file *);
+extern void fio_file_hash_lock(void);
+extern void fio_file_hash_unlock(void);
#endif