[win-pv-devel] [PATCH 0/3] Add trim/discard/unmap support

[Owen smith <owen.smith@xxxxxxxxxx>]

SCSIOP_UNMAP SRBs are not generated by Storport. Add a device upper
filter (xendisk) to create SCSIOP_UNMAP requests from the appropriate
IOCTL. Modify the SCSIOP_UNMAP handler in xenvbd to correctly translate
SCSIOP_UNMAP requests into one or more BLKIF_OP_DISCARD requests for the
ring.
Trim, Discard and Unmap are different names for the same basic operation,
which is flagging a number of sectors as unused, so that the disk hardware
can reclaim the sectors in the best way for the disk hardware.

Owen Smith (3):
  Decode SCSIOP_UNMAP correctly into BLKIF_OP_DISCARD requests
  Run XenCrsh sdv before XenVbd sdv
  Add XenDisk device upper filter

 build.py                            |    3 +-
 src/xendisk/assert.h                |  220 ++++
 src/xendisk/debug.h                 |   94 ++
 src/xendisk/driver.c                |  203 ++++
 src/xendisk/driver.h                |   68 ++
 src/xendisk/fdo.c                   | 1863 ++++++++++++++++++++++++++++++
 src/xendisk/fdo.h                   |   78 ++
 src/xendisk/mutex.h                 |  113 ++
 src/xendisk/pdo.c                   | 2126 +++++++++++++++++++++++++++++++++++
 src/xendisk/pdo.h                   |   90 ++
 src/xendisk/thread.c                |  225 ++++
 src/xendisk/thread.h                |   74 ++
 src/xendisk/types.h                 |   53 +
 src/xendisk/util.h                  |  222 ++++
 src/xendisk/xendisk.rc              |   56 +
 src/xenvbd.inf                      |   18 +
 src/xenvbd/pdo.c                    |  101 +-
 vs2012/package/package.vcxproj      |    5 +-
 vs2012/xendisk/xendisk.vcxproj      |   84 ++
 vs2012/xendisk/xendisk.vcxproj.user |    8 +
 vs2012/xenvbd.sln                   |   30 +-
 vs2013/package/package.vcxproj      |    5 +-
 vs2013/xendisk/xendisk.user         |    8 +
 vs2013/xendisk/xendisk.vcxproj      |  112 ++
 vs2013/xenvbd.sln                   |   27 +
 25 files changed, 5867 insertions(+), 19 deletions(-)
 create mode 100644 src/xendisk/assert.h
 create mode 100644 src/xendisk/debug.h
 create mode 100644 src/xendisk/driver.c
 create mode 100644 src/xendisk/driver.h
 create mode 100644 src/xendisk/fdo.c
 create mode 100644 src/xendisk/fdo.h
 create mode 100644 src/xendisk/mutex.h
 create mode 100644 src/xendisk/pdo.c
 create mode 100644 src/xendisk/pdo.h
 create mode 100644 src/xendisk/thread.c
 create mode 100644 src/xendisk/thread.h
 create mode 100644 src/xendisk/types.h
 create mode 100644 src/xendisk/util.h
 create mode 100644 src/xendisk/xendisk.rc
 create mode 100644 vs2012/xendisk/xendisk.vcxproj
 create mode 100644 vs2012/xendisk/xendisk.vcxproj.user
 create mode 100644 vs2013/xendisk/xendisk.user
 create mode 100644 vs2013/xendisk/xendisk.vcxproj

-- 
2.1.0


_______________________________________________
win-pv-devel mailing list
win-pv-devel@xxxxxxxxxxxxxxxxxxxx
http://lists.xenproject.org/cgi-bin/mailman/listinfo/win-pv-devel