git: hammer2 - Add HAMMER2_IO_DEBUG

[Matthew Dillon]

commit 3e3e52cc2039a01110ee28a94f3fec0d9c3d5521
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Fri Dec 7 18:05:16 2018 -0800

    hammer2 - Add HAMMER2_IO_DEBUG
    
    * Add HAMMER2_IO_DEBUG (default disabled).  This tracks callers
      that use hammer2_io's.  This eats a huge amount of (up to ~20GB)
      of kernel memory.

Summary of changes:
 sys/vfs/hammer2/hammer2.h    | 116 +++++++++++++++++++++++++++++++++++++------
 sys/vfs/hammer2/hammer2_io.c |  76 +++++++++++++++++++++-------
 2 files changed, 158 insertions(+), 34 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/3e3e52cc2039a01110ee28a94f3fec0d9c3d5521


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