---

yaml --- r: 172867 b: refs/heads/master c: 9cd13bd h: refs/heads/master i: 172865: 71910f6 172863: 1cabe66 v: v3
git-mirror · Dec 3, 2009 · ac13b6b · ac13b6b
1 parent 62f4745
commit ac13b6b
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5600c70e576199a7552e1c0fff43f3fe16f5566e
+refs/heads/master: 9cd13bdbae5d83399c375b34ee1eb35e16c10568
diff --git a/trunk/drivers/ata/libata-core.c b/trunk/drivers/ata/libata-core.c
@@ -6616,6 +6616,13 @@ static int __init ata_init(void)
 {
 	ata_parse_force_param();
 
+	/*
+	 * FIXME: In UP case, there is only one workqueue thread and if you
+	 * have more than one PIO device, latency is bloody awful, with
+	 * occasional multi-second "hiccups" as one PIO device waits for
+	 * another.  It's an ugly wart that users DO occasionally complain
+	 * about; luckily most users have at most one PIO polled device.
+	 */
 	ata_wq = create_workqueue("ata");
 	if (!ata_wq)
 		goto free_force_tbl;