Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[karo-tx-linux.git] / mm / page-writeback.c

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index d1960744f881d34fe3f1c3412d717db86b8e5478..0e309cd1b5b9a2e2841a10205d7d91ad87083dc7 100644 (file)
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -754,21 +754,10 @@ static void balance_dirty_pages(struct address_space *mapping,
                 * 200ms is typically more than enough to curb heavy dirtiers;
                 * (b) the pause time limit makes the dirtiers more responsive.
                 */
-               if (nr_dirty < dirty_thresh +
-                              dirty_thresh / DIRTY_MAXPAUSE_AREA &&
+               if (nr_dirty < dirty_thresh &&
+                   bdi_dirty < (task_bdi_thresh + bdi_thresh) / 2 &&
                    time_after(jiffies, start_time + MAX_PAUSE))
                        break;
-               /*
-                * pass-good area. When some bdi gets blocked (eg. NFS server
-                * not responding), or write bandwidth dropped dramatically due
-                * to concurrent reads, or dirty threshold suddenly dropped and
-                * the dirty pages cannot be brought down anytime soon (eg. on
-                * slow USB stick), at least let go of the good bdi's.
-                */
-               if (nr_dirty < dirty_thresh +
-                              dirty_thresh / DIRTY_PASSGOOD_AREA &&
-                   bdi_dirty < bdi_thresh)
-                       break;
 
                /*
                 * Increase the delay for each loop, up to our previous