--- mm/page-writeback.c

+++ mm/page-writeback.c

@@ -61,7 +61,7 @@ static inline long sync_writeback_pages(

/*

* Start background writeback (via writeback threads) at this percentage

*/

-int dirty_background_ratio = 10;

+int dirty_background_ratio = CONFIG_VM_DIRTY_BACKGROUND_RATIO;

/*

* dirty_background_bytes starts at 0 (disabled) so that it is a function of

@@ -78,7 +78,7 @@ int vm_highmem_is_dirtyable;

/*

* The generator of dirty data starts writeback at this percentage

*/

-int vm_dirty_ratio = 20;

+int vm_dirty_ratio = CONFIG_VM_DIRTY_RATIO;

/*

* vm_dirty_bytes starts at 0 (disabled) so that it is a function of

@@ -89,12 +89,12 @@ unsigned long vm_dirty_bytes;

/*

* The interval between `kupdate'-style writebacks

*/

-unsigned int dirty_writeback_interval = 5 * 100; /* centiseconds */

+unsigned int dirty_writeback_interval = CONFIG_VM_DIRTY_WRITBACK_INT; /* centiseconds */

/*

* The longest time for which data is allowed to remain dirty

*/

-unsigned int dirty_expire_interval = 30 * 100; /* centiseconds */

+unsigned int dirty_expire_interval = CONFIG_VM_DIRTY_EXPIRE_INT; /* centiseconds */

/*

* Flag that makes the machine dump writes/reads and block dirtyings.