git: kernel - dm - Reorganize the crypt code and implement B_HASBOGUS

[Matthew Dillon]

commit f6221ad16ba48c758e3a4b1e90e6c92e8e9b3162
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Sat Aug 14 17:51:42 2010 -0700

    kernel - dm - Reorganize the crypt code and implement B_HASBOGUS
    
    * Implement B_HASBOGUS data copying for read decryption.  When a buffer
      contains bogus pages we may or may not be able to safely decrypt data
      in-place, add some code to deal with it.
    
    * Reorganize the crypt code.  Separate the read and write paths and
      organize the procedures in the same order as the execution stages.
      Also move some of the buffer manipulation around a little to make
      it more clear.
    
    Submitted-by: alexh (B_HASBOGUS handling)

Summary of changes:
 sys/dev/disk/dm/device-mapper.c    |    3 +
 sys/dev/disk/dm/dm_target_crypt.c  |  673 +++++++++++++++++++++++-------------
 sys/dev/disk/dm/dm_target_stripe.c |    2 +
 3 files changed, 430 insertions(+), 248 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f6221ad16ba48c758e3a4b1e90e6c92e8e9b3162


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