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Spdk/include/spdk
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Jim Harris 383b117309 reduce: implement read and write with data 
For write operations, copy data to req->buf and write
to disk.

If chunk already specified in logical map, read the
chunk first into req->buf, and overwrite with data
specified by the write operation.

If chunk not specified in logical map, fill logical
blocks not specified by the write operation with
zeroes.

For read operations, read chunk into req->buf first,
then copy relevant data into the buffers specified
by the read operations.

These operations are all functional, but have room
for future improvement.  For example, this patch
will issue a separate backing read/write operations
for each backing block in the chunk - this could be
optimized to coalesce operations where the backing
blocks are contiguous.

While here, clean up freeing bufspace in one of
the error paths - this needs to be freed using
spdk_dma_free instead.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I6dbf4fc9a8fdf0f5424b1f1f9178c79891c96d0d

Reviewed-on: https://review.gerrithub.io/434116
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
2018-12-13 14:55:39 +00:00
..
assert.h include: move standard includes into spdk/stdinc.h 2017-05-08 10:11:01 -07:00
barrier.h barrier.h: fix load fence on armv8 2018-11-02 19:15:56 +00:00
base64.h util/base64: add base64 lib and unit tests 2018-07-19 00:50:54 +00:00
bdev_module.h bdev/part: use spdk_bdev_part_base instead of spdk_bdev as an API param 2018-11-28 22:51:30 +00:00
bdev.h QoS/Bdev: add the QoS related structure and enumeration 2018-10-02 22:10:13 +00:00
bit_array.h bit_array: return UINT32_MAX if no cleared bits found 2018-10-08 17:03:33 +00:00
blob_bdev.h bdev: rename spdk_bdev_module_if -> spdk_bdev_module 2018-03-13 00:55:12 -04:00
blob.h blobstore: Introduce io_unit size to blobstore. 2018-09-14 22:46:27 +00:00
blobfs.h blobfs: add a new API to return file's unique ID 2018-08-29 16:29:22 +00:00
conf.h include/conf: add comments for public APIs 2018-02-26 11:59:09 -05:00
copy_engine.h include/copy_engine.h: add comments for callback functions 2018-05-28 01:45:03 +00:00
cpuset.h doc: fix a bunch of parameter-related Doxygen comments 2018-06-19 17:29:06 +00:00
crc16.h util/crc16: add crc16 library support and unit tests 2017-12-20 15:12:26 -05:00
crc32.h Clean up some incorrect Copyright statements 2018-07-30 16:29:38 +00:00
endian.h include: move standard includes into spdk/stdinc.h 2017-05-08 10:11:01 -07:00
env.h pci: remove virtio-specific attach functions 2018-12-07 17:24:19 +00:00
event.h lib/trace: set num-trace-entries by app param 2018-11-26 18:34:18 +00:00
fd.h include/fd.h: add comments for pubclic APIs 2018-01-04 12:12:10 -05:00
gpt_spec.h bdev/gpt: dump partition name 2017-07-12 18:12:52 -04:00
histogram_data.h histograms: add function to merge histograms 2018-11-15 23:03:26 +00:00
io_channel.h thread: Rename io_channel.h to thread.h 2018-06-12 15:24:07 +00:00
ioat_spec.h ioat: clear the internal channel error register on reset 2018-08-13 16:59:18 +00:00
ioat.h ioat: change return type of spdk_ioat_detach() to be void 2018-09-11 21:16:48 +00:00
iscsi_spec.h iscsi: fix layout of logout request reason field 2017-09-22 16:11:11 -04:00
json.h json: add utilities function enabling itaration over JSON object 2018-10-18 16:07:37 +00:00
jsonrpc.h jsonrpc client: non-blocking mode 2018-12-07 09:41:03 +00:00
likely.h include: move standard includes into spdk/stdinc.h 2017-05-08 10:11:01 -07:00
log.h log: remove "trace" from public API 2018-12-03 19:50:15 +00:00
lvol.h lvol: destroy_lvol_bdev implementation 2018-07-25 17:06:45 +00:00
mmio.h mmio: add functions for 1 and 2 byte I/O accesses 2017-10-13 10:46:00 -04:00
nbd.h nbd: Make spdk_nbd_start asynchronous 2018-11-21 21:12:06 +00:00
net.h net: add asynchronous initialization and finish 2018-11-07 17:08:27 +00:00
nvme_intel.h include: move standard includes into spdk/stdinc.h 2017-05-08 10:11:01 -07:00
nvme_ocssd_spec.h ocssd: add chunk notification log struct 2018-09-27 01:30:45 +00:00
nvme_ocssd.h ocssd: add chunk notification log struct 2018-09-27 01:30:45 +00:00
nvme_spec.h nvme: Add the NVMe over fabrics TCP/IP transport support 2018-11-19 20:36:05 +00:00
nvme.h nvme: Eliminate identify errors to Discovery ctrlr 2018-12-11 17:39:52 +00:00
nvmf_fc_spec.h nvmf: FC-NVMe spec. header file 2018-07-06 22:49:20 +00:00
nvmf_spec.h nvme: Add the NVMe over fabrics TCP/IP transport support 2018-11-19 20:36:05 +00:00
nvmf.h nvmf: remove tgt_opts from nvmf_tgt 2018-11-08 23:08:26 +00:00
pci_ids.h nvme: add chk_rdy quirk for some Samsung drives 2018-07-14 01:47:47 +00:00
queue_extras.h scripts/check_format: check for spaces before tabs 2018-03-05 11:09:13 -05:00
queue.h Add extern "C" wrapper to all public headers 2016-02-12 07:52:35 -07:00
reduce.h reduce: implement read and write with data 2018-12-13 14:55:39 +00:00
rpc.h rpc: add spdk_rpc_is_method_allowed 2018-12-05 00:35:35 +00:00
scsi_spec.h scsi: add iSCSI initiator port TransportID 2018-12-05 16:04:06 +00:00
scsi.h scsi: Set TMF code prior to calling spdk_scsi_dev_queue_mgmt_task 2018-12-10 20:34:11 +00:00
sock.h sock: Update the spdk_sock_getaddr function. 2018-10-11 04:58:49 +00:00
stdinc.h app: allow full-name command line options 2018-08-13 17:30:10 +00:00
string.h util: make spdk_parse_ip_addr return -EINVAL instead -1 2018-10-12 23:34:27 +00:00
thread.h thread: Message passing now handled internally within a thread 2018-11-15 18:17:34 +00:00
trace.h lib/trace: show specific usage of trace mask 2018-11-30 14:52:28 +00:00
util.h fio_plugin: adjust polling timeout 2018-12-03 20:27:57 +00:00
uuid.h util/uuid: add a new uuid copy API. 2018-12-06 22:25:09 +00:00
version.h version: fix version string 2018-11-02 18:37:28 +00:00
vhost.h vhost/scsi: do not fail scsi_dev_add_tgt() if hotplug is not supported 2018-07-05 01:51:22 +00:00