mm/writeback: minor clean up for highmem_dirtyable_memory

[sfrench/cifs-2.6.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 91d163f8d36b2f69e97bdee62f4224d5c9583676..f13ed76399410e4c4d46731f757d0cbec5181cdf 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -323,18 +323,6 @@ static unsigned long highmem_dirtyable_memory(unsigned long total)
                }
        }
 
-       /*
-        * Unreclaimable memory (kernel memory or anonymous memory
-        * without swap) can bring down the dirtyable pages below
-        * the zone's dirty balance reserve and the above calculation
-        * will underflow.  However we still want to add in nodes
-        * which are below threshold (negative values) to get a more
-        * accurate calculation but make sure that the total never
-        * underflows.
-        */
-       if ((long)x < 0)
-               x = 0;
-
        /*
         * Make sure that the number of highmem pages is never larger
         * than the number of the total dirtyable memory. This can only