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| author | Chuck Lever <chuck.lever@oracle.com> | 2016-09-15 17:56:02 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-09-19 20:08:37 +0300 |
| commit | 08cf2efd5423121985af5962d66e6db14dff4130 (patch) | |
| tree | 3a2910042e5fecbf4dfc335d396e9069a6ae505b /net/sunrpc/xprtrdma/xprt_rdma.h | |
| parent | 9c40c49f145f8999ecbf81683aeb31d92b61b966 (diff) | |
| download | linux-08cf2efd5423121985af5962d66e6db14dff4130.tar.xz | |
xprtrdma: Use smaller buffers for RPC-over-RDMA headers
Commit 949317464bc2 ("xprtrdma: Limit number of RDMA segments in
RPC-over-RDMA headers") capped the number of chunks that may appear
in RPC-over-RDMA headers. The maximum header size can be estimated
and fixed to avoid allocating buffer space that is never used.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/xprt_rdma.h')
| -rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 444f6370d46c..cc426b165c09 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -160,7 +160,10 @@ rdmab_to_msg(struct rpcrdma_regbuf *rb) * The smallest inline threshold is 1024 bytes, ensuring that * at least 750 bytes are available for RPC messages. */ -#define RPCRDMA_MAX_HDR_SEGS (8) +enum { + RPCRDMA_MAX_HDR_SEGS = 8, + RPCRDMA_HDRBUF_SIZE = 256, +}; /* * struct rpcrdma_rep -- this structure encapsulates state required to recv |