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svcrdma: Support multiple write chunks when pulling up

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When counting the number of SGEs needed to construct a Send request,
do not count result payloads. And, when copying the Reply message
into the pull-up buffer, result payloads are not to be copied to the
Send buffer.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2020-03-13 10:42:11 -04:00
parent 6911f3e10c
commit 9d0b09d5ef
5 changed files with 145 additions and 86 deletions
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9
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
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@@ -194,8 +194,13 @@ void svc_rdma_recv_ctxts_destroy(struct svcxprt_rdma *rdma)
}
}
static struct svc_rdma_recv_ctxt *
svc_rdma_recv_ctxt_get(struct svcxprt_rdma *rdma)
/**
* svc_rdma_recv_ctxt_get - Allocate a recv_ctxt
* @rdma: controlling svcxprt_rdma
*
* Returns a recv_ctxt or (rarely) NULL if none are available.
*/
struct svc_rdma_recv_ctxt *svc_rdma_recv_ctxt_get(struct svcxprt_rdma *rdma)
{
struct svc_rdma_recv_ctxt *ctxt;
struct llist_node *node;