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| author | Vu Pham <vu@mellanox.com> | 2013-11-11 18:04:29 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-11-12 22:07:52 +0100 |
| commit | f01b9f73392b48c6cda7c2c66594c73137c776da (patch) | |
| tree | e673d3361ccb1a79de47609dc36d9760411084c9 /include/target | |
| parent | target: Add per device xcopy_lun for copy offload I/O (diff) | |
| download | linux-f01b9f73392b48c6cda7c2c66594c73137c776da.tar.xz linux-f01b9f73392b48c6cda7c2c66594c73137c776da.zip | |
iser-target: Avoid using FRMR for single dma entry requests
This patch changes isert_reg_rdma_frwr() to not use FRMR for single
dma entry requests from small I/Os, in order to avoid the associated
memory registration overhead.
Using DMA MR is sufficient here for the single dma entry requests,
and addresses a >= v3.12 performance regression.
Signed-off-by: Vu Pham <vu@mellanox.com>
Cc: <stable@vger.kernel.org> # v3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
0 files changed, 0 insertions, 0 deletions