git: hammer2 - stabilization - Fix bugs found by blogbench

[Matthew Dillon]

commit 815e1c13cd185a8d3507c7d200b6f53a78b6a364
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Tue Sep 1 00:28:18 2015 -0700

    hammer2 - stabilization - Fix bugs found by blogbench
    
    * Make sure that any inode without an associated vnode gets put on
      the sideq if it is dirtied, otherwise it might not ever get flushed.
    
    * Fix a SMP race in hammer2_xop_start_except().  For asynchronous completions,
      the xop can become invalid the instant we release our spinlock if another
      thread manages to process, retire, and free it.

Summary of changes:
 sys/vfs/hammer2/hammer2_inode.c    | 28 +++++++++++++++++++++++++++-
 sys/vfs/hammer2/hammer2_strategy.c |  1 +
 sys/vfs/hammer2/hammer2_thread.c   | 31 +++++++++----------------------
 3 files changed, 37 insertions(+), 23 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/815e1c13cd185a8d3507c7d200b6f53a78b6a364


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