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H A D | target_core_iblock.c | 07b63196 Wed Feb 24 13:56:33 CST 2016 Mike Christie <mchristi@redhat.com> target/iblock: pass WRITE_SAME to device if possible
This patch has iblock pass the WRITE_SAME command to the device for offloading if possible. It is similar to what is done for UNMAP/discards, except that we export a large max write same value to the initiator, and then rely on the block layer to break it up into multiple requests if it cannot fit into one.
v2.
- Drop file backend changes and move helper function to iblock backend.
Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> 07b63196 Wed Feb 24 13:56:33 CST 2016 Mike Christie <mchristi@redhat.com> target/iblock: pass WRITE_SAME to device if possible This patch has iblock pass the WRITE_SAME command to the device for offloading if possible. It is similar to what is done for UNMAP/discards, except that we export a large max write same value to the initiator, and then rely on the block layer to break it up into multiple requests if it cannot fit into one. v2. - Drop file backend changes and move helper function to iblock backend. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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