git: kernel - Add overlapping buffer test to the buffer cache

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 7608650f2d0c2fb8e1dea0d0d868da353d31ea86
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date:   Sun Aug 15 08:20:37 2010 -0700

    kernel - Add overlapping buffer test to the buffer cache
    
    * Add a test for overlapping buffer in bgetvp().
    
    * Add a sysctl vfs.check_buf_overlap which defaults to enabling the
      check invasively.  Overlapping buffer cache buffers can be deadly.
    
      0 - disabled
      1 - checked and reported
      2 - checked and panic (invasive) (default)

Summary of changes:
 sys/kern/vfs_bio.c  |    2 +-
 sys/kern/vfs_subr.c |   39 ++++++++++++++++++++++++++++++++++++++-
 sys/sys/buf.h       |    2 +-
 3 files changed, 40 insertions(+), 3 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/7608650f2d0c2fb8e1dea0d0d868da353d31ea86


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