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xprtrdma: Increase maximum number of backchannel requests 

Reflects the change introduced in commit 067c469671 ("NFSv4.1:
Bump the default callback session slot count to 16").

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2019-04-24 09:39:42 -04:00 committed by Anna Schumaker
parent 3f9c7e7693
commit 4ba02e8d0e
1 changed files with 5 additions and 3 deletions
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8
net/sunrpc/xprtrdma/xprt_rdma.h
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@ -103,12 +103,14 @@ struct rpcrdma_ep {
/* Pre-allocate extra Work Requests for handling backward receives
* and sends. This is a fixed value because the Work Queues are
* allocated when the forward channel is set up.
* allocated when the forward channel is set up, long before the
* backchannel is provisioned. This value is two times
* NFS4_DEF_CB_SLOT_TABLE_SIZE.
*/
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
#define RPCRDMA_BACKWARD_WRS (8)
#define RPCRDMA_BACKWARD_WRS (32)
#else
#define RPCRDMA_BACKWARD_WRS (0)
#define RPCRDMA_BACKWARD_WRS (0)
#endif
/* Registered buffer -- registered kmalloc'd memory for RDMA SEND/RECV