--- include/linux/mm.h

+++ include/linux/mm.h

@@ -1473,7 +1473,7 @@ void task_dirty_inc(struct task_struct *

/* readahead.c */

#define VM_MAX_READAHEAD 2048 /* kbytes */

-#define VM_MIN_READAHEAD 64 /* kbytes (includes current page) */

+#define VM_MIN_READAHEAD 128 /* kbytes (includes current page) */

extern unsigned long max_readahead_pages;