svn commit: r283126 - head/sys/arm/arm

[Warner Losh]

Author: imp
Date: Tue May 19 21:16:37 2015
New Revision: 283126
URL: https://svnweb.freebsd.org/changeset/base/283126

Log:
  Improve comment about unmapped I/O and fix typos.
  
  Submitted by: Matteo Riondato
  MFC After: 2 days

Modified:
  head/sys/arm/arm/pmap.c

Modified: head/sys/arm/arm/pmap.c
==============================================================================
--- head/sys/arm/arm/pmap.c	Tue May 19 21:00:53 2015	(r283125)
+++ head/sys/arm/arm/pmap.c	Tue May 19 21:16:37 2015	(r283126)
@@ -4311,10 +4311,10 @@ pmap_copy_page(vm_page_t src, vm_page_t 
 }
 
 /*
- * We have code to do unmapped I/O. However, it isn't quite right
- * an causes un-page-aligned I/O to devices to fail (most notably
- * newfs or fsck). We give up a little performance to do this, but
- * we trade that for rock-solid stability so it is a good trade.
+ * We have code to do unmapped I/O. However, it isn't quite right and
+ * causes un-page-aligned I/O to devices to fail (most notably newfs
+ * or fsck). We give up a little performance to not allow unmapped I/O
+ * to gain stability.
  */
 int unmapped_buf_allowed = 0;