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| author | Sagi Grimberg <sagig@mellanox.com> | 2015-10-13 18:12:58 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-10-28 17:26:06 +0100 |
| commit | dd0107a08996c0ab8cac2b98ddbed5313e118e81 (patch) | |
| tree | 1248e196a4cfc38d3c06b736171249e395e19fe7 /include | |
| parent | iser-target: Remove an unused variable (diff) | |
| download | linux-dd0107a08996c0ab8cac2b98ddbed5313e118e81.tar.xz linux-dd0107a08996c0ab8cac2b98ddbed5313e118e81.zip | |
IB/iser: set block queue_virt_boundary
The block layer can reliably guarantee that SG lists won't
contain gaps (page unaligned) if a driver set the queue
virt_boundary.
With this setting the block layer will:
- refuse merges if bios are not aligned to the virtual boundary
- split bios/requests that are not aligned to the virtual boundary
- or, bounce buffer SG_IOs that are not aligned to the virtual boundary
Since iser is working in 4K page size, set the virt_boundary to
4K pages. With this setting, we can now safely remove the bounce
buffering logic in iser.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions