Documentation: memcg: future proof hierarchical statistics documentation

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3fc2617..93d8d2f 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -95,6 +95,8 @@ unsigned long vm_dirty_bytes;
  */
 unsigned int dirty_writeback_interval = 5 * 100; /* centiseconds */
 
+EXPORT_SYMBOL_GPL(dirty_writeback_interval);
+
 /*
  * The longest time for which data is allowed to remain dirty
  */
@@ -202,7 +204,7 @@ static unsigned long highmem_dirtyable_memory(unsigned long total)
  * Returns the global number of pages potentially available for dirty
  * page cache.  This is the base value for the global dirty limits.
  */
-unsigned long global_dirtyable_memory(void)
+static unsigned long global_dirtyable_memory(void)
 {
        unsigned long x;
 
@@ -1566,6 +1568,7 @@ void writeback_set_ratelimit(void)
        unsigned long background_thresh;
        unsigned long dirty_thresh;
        global_dirty_limits(&background_thresh, &dirty_thresh);
+       global_dirty_limit = dirty_thresh;
        ratelimit_pages = dirty_thresh / (num_online_cpus() * 32);
        if (ratelimit_pages < 16)
                ratelimit_pages = 16;