Author: mav
Date: Wed Oct 14 07:37:02 2015
New Revision: 289295
URL: https://svnweb.freebsd.org/changeset/base/289295

Log:
  MFV r289294: 5219 l2arc_write_buffers() may write beyond target_sz
  
  Reviewed by: Matthew Ahrens <[email protected]>
  Reviewed by: Saso Kiselkov <[email protected]>
  Reviewed by: George Wilson <[email protected]>
  Reviewed by: Steven Hartland <[email protected]>
  Reviewed by: Justin Gibbs <[email protected]>
  Approved by: Matthew Ahrens <[email protected]>
  Author: Andriy Gapon <[email protected]>
  
  illumos/illumos-gate@d7d9a6d919f92d74ea0510a53f8441396048e800

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

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c   Wed Oct 14 
07:28:36 2015        (r289294)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c   Wed Oct 14 
07:37:02 2015        (r289295)
@@ -6243,7 +6243,8 @@ l2arc_write_buffers(spa_t *spa, l2arc_de
     boolean_t *headroom_boost)
 {
        arc_buf_hdr_t *hdr, *hdr_prev, *head;
-       uint64_t write_asize, write_sz, headroom, buf_compress_minsz;
+       uint64_t write_asize, write_sz, headroom,
+           buf_compress_minsz;
        void *buf_data;
        boolean_t full;
        l2arc_write_callback_t *cb;
@@ -6405,6 +6406,7 @@ l2arc_write_buffers(spa_t *spa, l2arc_de
                         * using it to denote the header's state change.
                         */
                        hdr->b_l2hdr.b_daddr = L2ARC_ADDR_UNSET;
+
                        hdr->b_flags |= ARC_FLAG_HAS_L2HDR;
 
                        mutex_enter(&dev->l2ad_mtx);
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