---

yaml --- r: 164287 b: refs/heads/master c: 87c6a9b h: refs/heads/master i: 164285: 7aeb80f 164283: e7841df 164279: 3112dea 164271: 039f0a0 164255: b4debc9 164223: 9e9be00 v: v3
git-mirror · Sep 21, 2009 · 3d99317 · 3d99317
1 parent 742fd3a
commit 3d99317
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3542a5c0de3d5b33227214a692bf9b12e249078e
+refs/heads/master: 87c6a9b253520b66e7f5e8f67a37a701eaa51cee
diff --git a/trunk/mm/page-writeback.c b/trunk/mm/page-writeback.c
@@ -485,6 +485,7 @@ static void balance_dirty_pages(struct address_space *mapping)
 	unsigned long bdi_thresh;
 	unsigned long pages_written = 0;
 	unsigned long write_chunk = sync_writeback_pages();
+	unsigned long pause = 1;
 
 	struct backing_dev_info *bdi = mapping->backing_dev_info;
 
@@ -561,7 +562,15 @@ static void balance_dirty_pages(struct address_space *mapping)
 		if (pages_written >= write_chunk)
 			break;		/* We've done our duty */
 
-		schedule_timeout_interruptible(1);
+		schedule_timeout_interruptible(pause);
+
+		/*
+		 * Increase the delay for each loop, up to our previous
+		 * default of taking a 100ms nap.
+		 */
+		pause <<= 1;
+		if (pause > HZ / 10)
+			pause = HZ / 10;
 	}
 
 	if (bdi_nr_reclaimable + bdi_nr_writeback < bdi_thresh &&