[PATCH] FRV: permit __do_IRQ() to be dispensed with

[linux-2.6-microblaze.git] / include / linux / writeback.h

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 343d883..56a23a0 100644 (file)
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -50,21 +50,17 @@ struct writeback_control {
         * a hint that the filesystem need only write out the pages inside that
         * byterange.  The byte at `end' is included in the writeout request.
         */
-       loff_t start;
-       loff_t end;
-
-       unsigned nonblocking:1;                 /* Don't get stuck on request queues */
-       unsigned encountered_congestion:1;      /* An output: a queue is full */
-       unsigned for_kupdate:1;                 /* A kupdate writeback */
-       unsigned for_reclaim:1;                 /* Invoked from the page allocator */
+       loff_t range_start;
+       loff_t range_end;
+
+       unsigned nonblocking:1;         /* Don't get stuck on request queues */
+       unsigned encountered_congestion:1; /* An output: a queue is full */
+       unsigned for_kupdate:1;         /* A kupdate writeback */
+       unsigned for_reclaim:1;         /* Invoked from the page allocator */
+       unsigned for_writepages:1;      /* This is a writepages() call */
+       unsigned range_cyclic:1;        /* range_start is cyclic */
 };
 
-/*
- * ->writepage() return values (make these much larger than a pagesize, in
- * case some fs is returning number-of-bytes-written from writepage)
- */
-#define WRITEPAGE_ACTIVATE     0x80000 /* IO was not started: activate page */
-
 /*
  * fs/fs-writeback.c
  */    
@@ -89,12 +85,13 @@ int wakeup_pdflush(long nr_pages);
 void laptop_io_completion(void);
 void laptop_sync_completion(void);
 void throttle_vm_writeout(void);
+void writeback_congestion_end(void);
 
 /* These are exported to sysctl. */
 extern int dirty_background_ratio;
 extern int vm_dirty_ratio;
-extern int dirty_writeback_centisecs;
-extern int dirty_expire_centisecs;
+extern int dirty_writeback_interval;
+extern int dirty_expire_interval;
 extern int block_dump;
 extern int laptop_mode;
 
@@ -104,11 +101,22 @@ int dirty_writeback_centisecs_handler(struct ctl_table *, int, struct file *,
                                      void __user *, size_t *, loff_t *);
 
 void page_writeback_init(void);
-void balance_dirty_pages_ratelimited(struct address_space *mapping);
+void balance_dirty_pages_ratelimited_nr(struct address_space *mapping,
+                                       unsigned long nr_pages_dirtied);
+
+static inline void
+balance_dirty_pages_ratelimited(struct address_space *mapping)
+{
+       balance_dirty_pages_ratelimited_nr(mapping, 1);
+}
+
 int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0);
 int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
 int sync_page_range(struct inode *inode, struct address_space *mapping,
-                       loff_t pos, size_t count);
+                       loff_t pos, loff_t count);
+int sync_page_range_nolock(struct inode *inode, struct address_space *mapping,
+                          loff_t pos, loff_t count);
+void set_page_dirty_balance(struct page *page);
 
 /* pdflush.c */
 extern int nr_pdflush_threads; /* Global so it can be exported to sysctl