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-rw-r--r--fs/super.c1
-rw-r--r--include/linux/writeback.h4
-rw-r--r--mm/page-writeback.c2
3 files changed, 7 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c
index dc72491a19f9..1527e6a0ee35 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -37,6 +37,7 @@
#include <linux/kobject.h>
#include <linux/mutex.h>
#include <linux/file.h>
+#include <linux/backing-dev.h>
#include <asm/uaccess.h>
#include "internal.h"
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 47e1c686cb02..cc97d6caf2b3 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -106,10 +106,14 @@ static inline void inode_sync_wait(struct inode *inode)
/*
* mm/page-writeback.c
*/
+#ifdef CONFIG_BLOCK
void laptop_io_completion(struct backing_dev_info *info);
void laptop_sync_completion(void);
void laptop_mode_sync(struct work_struct *work);
void laptop_mode_timer_fn(unsigned long data);
+#else
+static inline void laptop_sync_completion(void) { }
+#endif
void throttle_vm_writeout(gfp_t gfp_mask);
/* These are exported to sysctl. */
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0d7bbe859550..9886424e1864 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -694,6 +694,7 @@ int dirty_writeback_centisecs_handler(ctl_table *table, int write,
return 0;
}
+#ifdef CONFIG_BLOCK
void laptop_mode_timer_fn(unsigned long data)
{
struct request_queue *q = (struct request_queue *)data;
@@ -735,6 +736,7 @@ void laptop_sync_completion(void)
rcu_read_unlock();
}
+#endif
/*
* If ratelimit_pages is too high then we can get into dirty-data overload