writeback: remove unused function parameter

[sfrench/cifs-2.6.git] / include / linux / backing-dev.h

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 16621579a3db313bf4a5f315a732ae6121e8b8c2..e54e7e0033eb3c3fd97700a51e44225bd083551a 100644 (file)
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -39,8 +39,6 @@ static inline struct backing_dev_info *bdi_alloc(gfp_t gfp_mask)
        return bdi_alloc_node(gfp_mask, NUMA_NO_NODE);
 }
 
-void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
-                       bool range_cyclic, enum wb_reason reason);
 void wb_start_background_writeback(struct bdi_writeback *wb);
 void wb_workfn(struct work_struct *work);
 void wb_wakeup_delayed(struct bdi_writeback *wb);
@@ -95,7 +93,7 @@ extern void wb_writeout_inc(struct bdi_writeback *wb);
 /*
  * maximal error of a stat counter.
  */
-static inline unsigned long wb_stat_error(struct bdi_writeback *wb)
+static inline unsigned long wb_stat_error(void)
 {
 #ifdef CONFIG_SMP
        return nr_cpu_ids * WB_STAT_BATCH;
@@ -124,6 +122,8 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
  * BDI_CAP_STRICTLIMIT:    Keep number of dirty pages below bdi threshold.
  *
  * BDI_CAP_CGROUP_WRITEBACK: Supports cgroup-aware writeback.
+ * BDI_CAP_SYNCHRONOUS_IO: Device is so fast that asynchronous IO would be
+ *                        inefficient.
  */
 #define BDI_CAP_NO_ACCT_DIRTY  0x00000001
 #define BDI_CAP_NO_WRITEBACK   0x00000002
@@ -131,6 +131,7 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
 #define BDI_CAP_STABLE_WRITES  0x00000008
 #define BDI_CAP_STRICTLIMIT    0x00000010
 #define BDI_CAP_CGROUP_WRITEBACK 0x00000020
+#define BDI_CAP_SYNCHRONOUS_IO 0x00000040
 
 #define BDI_CAP_NO_ACCT_AND_WRITEBACK \
        (BDI_CAP_NO_WRITEBACK | BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_ACCT_WB)
@@ -175,8 +176,11 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits)
 
 long congestion_wait(int sync, long timeout);
 long wait_iff_congested(struct pglist_data *pgdat, int sync, long timeout);
-int pdflush_proc_obsolete(struct ctl_table *table, int write,
-               void __user *buffer, size_t *lenp, loff_t *ppos);
+
+static inline bool bdi_cap_synchronous_io(struct backing_dev_info *bdi)
+{
+       return bdi->capabilities & BDI_CAP_SYNCHRONOUS_IO;
+}
 
 static inline bool bdi_cap_stable_pages_required(struct backing_dev_info *bdi)
 {