Commit 0d956e69 authored by Chuck Lever's avatar Chuck Lever Committed by J. Bruce Fields

svcrdma: Clean-up svc_rdma_unmap_dma

There's no longer a need to compare each SGE's lkey with the PD's
local_dma_lkey. Now that FRWR is gone, all DMA mappings are for
pages that were registered with this key.
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 463e63d7
......@@ -225,22 +225,13 @@ void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt)
{
struct svcxprt_rdma *xprt = ctxt->xprt;
struct ib_device *device = xprt->sc_cm_id->device;
u32 lkey = xprt->sc_pd->local_dma_lkey;
unsigned int i;
for (i = 0; i < ctxt->mapped_sges; i++) {
/*
* Unmap the DMA addr in the SGE if the lkey matches
* the local_dma_lkey, otherwise, ignore it since it is
* an FRMR lkey and will be unmapped later when the
* last WR that uses it completes.
*/
if (ctxt->sge[i].lkey == lkey)
ib_dma_unmap_page(device,
ctxt->sge[i].addr,
ctxt->sge[i].length,
ctxt->direction);
}
for (i = 0; i < ctxt->mapped_sges; i++)
ib_dma_unmap_page(device,
ctxt->sge[i].addr,
ctxt->sge[i].length,
ctxt->direction);
ctxt->mapped_sges = 0;
}
......
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