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Chuck Lever authored
When the underlying device driver is reloaded, ia->ri_device will be replaced. All cached copies of that device pointer have to be updated as well. Commit 54cbd6b0 ("xprtrdma: Delay DMA mapping Send and Receive buffers") added the rg_device field to each regbuf. As part of handling a device removal, rpcrdma_dma_unmap_regbuf is invoked on all regbufs for a transport. Simply calling rpcrdma_dma_map_regbuf for each Receive buffer after the driver has been reloaded should reinitialize rg_device correctly for every case except rpcrdma_wc_receive, which still uses rpcrdma_rep::rr_device. Ensure the same device that was used to map a Receive buffer is also used to sync it in rpcrdma_wc_receive by using rg_device there instead of rr_device. This is the only use of rr_device, so it can be removed. The use of regbufs in the send path is also updated, for completeness. Fixes: 54cbd6b0 ("xprtrdma: Delay DMA mapping Send and ... ") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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