diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2016-09-15 10:56:02 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-09-19 13:08:37 -0400 |
| commit | 08cf2efd5423121985af5962d66e6db14dff4130 (patch) | |
| tree | 3a2910042e5fecbf4dfc335d396e9069a6ae505b /net/sunrpc/xprtrdma/backchannel.c | |
| parent | 9c40c49f145f8999ecbf81683aeb31d92b61b966 (diff) | |
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/backchannel.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/backchannel.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c index c4904f881640..60fc9915292f 100644 --- a/net/sunrpc/xprtrdma/backchannel.c +++ b/net/sunrpc/xprtrdma/backchannel.c @@ -45,13 +45,12 @@ static int rpcrdma_bc_setup_rqst(struct rpcrdma_xprt *r_xprt, return PTR_ERR(req); req->rl_backchannel = true; - size = r_xprt->rx_data.inline_wsize; - rb = rpcrdma_alloc_regbuf(ia, size, GFP_KERNEL); + rb = rpcrdma_alloc_regbuf(ia, RPCRDMA_HDRBUF_SIZE, GFP_KERNEL); if (IS_ERR(rb)) goto out_fail; req->rl_rdmabuf = rb; - size += r_xprt->rx_data.inline_rsize; + size = r_xprt->rx_data.inline_rsize; rb = rpcrdma_alloc_regbuf(ia, size, GFP_KERNEL); if (IS_ERR(rb)) goto out_fail; |