svn commit: r273192 - releng/10.1/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Xin LI]

Author: delphij
Date: Thu Oct 16 22:20:38 2014
New Revision: 273192
URL: https://svnweb.freebsd.org/changeset/base/273192

Log:
  MFS r273191: MFC r273060:
  
  Use write_psize instead of write_asize when doing vdev_space_update.
  Without this change the accounting of L2ARC usage would be wrong and
  give 16EB free space because the number became negative and overflows.
  
  Approved by:	re (gjb)

Modified:
  releng/10.1/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Directory Properties:
  releng/10.1/   (props changed)

Modified: releng/10.1/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- releng/10.1/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Thu Oct 16 22:12:23 2014	(r273191)
+++ releng/10.1/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Thu Oct 16 22:20:38 2014	(r273192)
@@ -5163,7 +5163,7 @@ l2arc_write_buffers(spa_t *spa, l2arc_de
 	ARCSTAT_INCR(arcstat_l2_write_bytes, write_asize);
 	ARCSTAT_INCR(arcstat_l2_size, write_sz);
 	ARCSTAT_INCR(arcstat_l2_asize, write_asize);
-	vdev_space_update(dev->l2ad_vdev, write_asize, 0, 0);
+	vdev_space_update(dev->l2ad_vdev, write_psize, 0, 0);
 
 	/*
 	 * Bump device hand to the device start if it is approaching the end.