mm: Add range_cont mode for writeback

[linux-2.6-omap-h63xx.git] / include / linux / writeback.h

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index c6148bbf1250a37ec4d29ba49732ff87a2019506..0d8573e6b9ec24364bbab8c6c1e827946e483c58 100644 (file)
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -62,6 +62,8 @@ struct writeback_control {
        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 */
+       unsigned more_io:1;             /* more io to be dispatched */
+       unsigned range_cont:1;
 };
 
 /*
@@ -100,6 +102,7 @@ extern int dirty_background_ratio;
 extern int vm_dirty_ratio;
 extern int dirty_writeback_interval;
 extern int dirty_expire_interval;
+extern int vm_highmem_is_dirtyable;
 extern int block_dump;
 extern int laptop_mode;
 
@@ -112,6 +115,9 @@ struct file;
 int dirty_writeback_centisecs_handler(struct ctl_table *, int, struct file *,
                                      void __user *, size_t *, loff_t *);
 
+void get_dirty_limits(long *pbackground, long *pdirty, long *pbdi_dirty,
+                struct backing_dev_info *bdi);
+
 void page_writeback_init(void);
 void balance_dirty_pages_ratelimited_nr(struct address_space *mapping,
                                        unsigned long nr_pages_dirtied);