The point of larger rsize and wsize is to reduce the per-byte cost of memory registration and deregistration. Modern HCAs can typically handle a megabyte or more with a single registration operation.
Signed-off-by: Chuck Lever <chuck.le...@oracle.com> Reviewed-by: Devesh Sharma <devesh.sha...@avagotech.com> Reviewed-By: Sagi Grimberg <sa...@mellanox.com> Tested-by: Devesh Sharma <devesh.sha...@avagotech.com> --- net/sunrpc/xprtrdma/xprt_rdma.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index f49dd8b..abee472 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -165,8 +165,7 @@ rdmab_to_msg(struct rpcrdma_regbuf *rb) * struct rpcrdma_buffer. N is the max number of outstanding requests. */ -/* temporary static scatter/gather max */ -#define RPCRDMA_MAX_DATA_SEGS (64) /* max scatter/gather */ +#define RPCRDMA_MAX_DATA_SEGS ((1 * 1024 * 1024) / PAGE_SIZE) #define RPCRDMA_MAX_SEGS (RPCRDMA_MAX_DATA_SEGS + 2) /* head+tail = 2 */ struct rpcrdma_buffer; -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
