[VLAN]: Avoid expensive divides

[safe/jmp/linux-2.6] / include / linux / writeback.h

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 0c78f7f..c6148bb 100644 (file)
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -4,6 +4,9 @@
 #ifndef WRITEBACK_H
 #define WRITEBACK_H
 
+#include <linux/sched.h>
+#include <linux/fs.h>
+
 struct backing_dev_info;
 
 extern spinlock_t inode_lock;
@@ -65,7 +68,6 @@ struct writeback_control {
  * fs/fs-writeback.c
  */    
 void writeback_inodes(struct writeback_control *wbc);
-void wake_up_inode(struct inode *inode);
 int inode_wait(void *);
 void sync_inodes_sb(struct super_block *, int wait);
 void sync_inodes(int wait);
@@ -77,6 +79,13 @@ static inline void wait_on_inode(struct inode *inode)
        wait_on_bit(&inode->i_state, __I_LOCK, inode_wait,
                                                        TASK_UNINTERRUPTIBLE);
 }
+static inline void inode_sync_wait(struct inode *inode)
+{
+       might_sleep();
+       wait_on_bit(&inode->i_state, __I_SYNC, inode_wait,
+                                                       TASK_UNINTERRUPTIBLE);
+}
+
 
 /*
  * mm/page-writeback.c
@@ -94,6 +103,10 @@ extern int dirty_expire_interval;
 extern int block_dump;
 extern int laptop_mode;
 
+extern int dirty_ratio_handler(struct ctl_table *table, int write,
+               struct file *filp, void __user *buffer, size_t *lenp,
+               loff_t *ppos);
+
 struct ctl_table;
 struct file;
 int dirty_writeback_centisecs_handler(struct ctl_table *, int, struct file *,
@@ -109,15 +122,21 @@ balance_dirty_pages_ratelimited(struct address_space *mapping)
        balance_dirty_pages_ratelimited_nr(mapping, 1);
 }
 
+typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc,
+                               void *data);
+
 int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0);
-extern int generic_writepages(struct address_space *mapping,
-                             struct writeback_control *wbc);
+int generic_writepages(struct address_space *mapping,
+                      struct writeback_control *wbc);
+int write_cache_pages(struct address_space *mapping,
+                     struct writeback_control *wbc, writepage_t writepage,
+                     void *data);
 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, 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);
+void set_page_dirty_balance(struct page *page, int page_mkwrite);
 void writeback_set_ratelimit(void);
 
 /* pdflush.c */