[Xen-devel] [PATCH 000] blkif: Introduce trim interface

[<owen.smith@xxxxxxxxxx>]

Trim operation is a request for the underlying block device to mark
extents to be erased. This is a stub patch that responds to trim 
operations with BLKIF_RSP_EOPNOTSUPP and is intended to specify
the blkif ring interface.
More information about trim operations at;
http://t13.org/Documents/UploadedDocuments/docs2008/
    e07154r6-Data_Set_Management_Proposal_for_ATA-ACS2.doc

This patch set touches 3 repositories with similar changes to each.

xen-unstable.hg
1/2 xen-unstable/blkif: Moves the read/write/barrier request specific 
      fields into a union.
2/2 xen-unstable/blkif: Defines the operation code and structure of a
      trim operation.

xen.git
1/2 pvops/blkif: Moves the read/write/barrier request specific fields 
      into a union.
2/2 pvops/blkif: Defines the operation code and structure of a trim 
      operation. Responds to trim operations with BLKIF_RSP_EOPNOTSUPP.

qemu-xen.git
1/1 qemu-xen/blkif: Moves the read/write/barrier request specific 
      fields into a union. Needed to compile qemu-xen as part of
      xen-unstable's build.


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