svcrdma: Add back svcxprt_rdma::sc_read_complete_q

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Having an nfsd thread waiting for an RDMA Read completion is
problematic if the Read responder (ie, the client) stops responding.
We need to go back to handling RDMA Reads by allowing the nfsd
thread to return to the svc scheduler, then waking a second thread
finish the RPC message once the Read completion fires.

As a next step, add a list_head upon which completed Reads are queued.
A subsequent patch will make use of this queue.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

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This commit is contained in:

Chuck Lever 2023-12-18 17:31:54 -05:00

parent 4d9d69db89

commit a937693a82

3 changed files with 38 additions and 1 deletions

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1

include/linux/sunrpc/svc_rdma.h

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37

net/sunrpc/xprtrdma/svc_rdma_recvfrom.c

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1

net/sunrpc/xprtrdma/svc_rdma_transport.c

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