[PATCH 0/15] copy offload patches

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From	Mikulas Patocka <mpatocka@redhat.com>
Newsgroups	linux.kernel
Subject	[PATCH 0/15] copy offload patches
Date	Thu, 10 Dec 2015 18:40:03 +0100
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Hi

This patch series adds copy offload (the XCOPY command) to the block 
layer, SCSI subsystems and device mapper.

The principle of operation is this:

We create two bios with REQ_COPY flag, one for read and one for write. The 
bios have no data pages and they both point to the same bio_copy 
structure. The bios may be submitted to the same logical volume or to 
different logical volumes. The bios go independently through the device 
mapper stack and when they both reach the physical device (the function 
blk_queue_bio), the bio pair is collected and the XCOPY request is sent to 
the SCSI device.

Mikulas
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[PATCH 0/15] copy offload patches Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 7/15] scsi xcopy: keep cache of failures Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 5/15] block copy: use asynchronous notification Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 6/15] scsi xcopy: suppress error messages Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 4/15] block copy: use a timer to fix a theoretical deadlock Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 14/15] dm kcopyd: change mutex to spinlock Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 9/15] dm: implement copy Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 1/15] block copy: initial XCOPY offload support Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 12/15] dm kcopyd: introduce the function submit_job Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  Re: [PATCH 0/15] copy offload patches "Martin K. Petersen" <martin.petersen@oracle.com> - 2015-12-10 23:40 +0100
    Re: [dm-devel] [PATCH 0/15] copy offload patches Mike Christie <michaelc@cs.wisc.edu> - 2015-12-11 06:10 +0100
      Re: [dm-devel] [PATCH 0/15] copy offload patches Christoph Hellwig <hch@infradead.org> - 2015-12-11 21:00 +0100

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