diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2014-05-28 10:33:51 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-06-04 08:56:45 -0400 |
| commit | 8301a2c047cc25dabd645e5590c1db0ead4c5af4 (patch) | |
| tree | eb9901cc1585570fe8306d05d6d3b381662ef1ce /net/sunrpc/xprtrdma/xprt_rdma.h | |
| parent | 1c00dd0776543608e13c74a527660cb8cd28a74f (diff) | |
xprtrdma: Limit work done by completion handler
Sagi Grimberg <sagig@dev.mellanox.co.il> points out that a steady
stream of CQ events could starve other work because of the boundless
loop pooling in rpcrdma_{send,recv}_poll().
Instead of a (potentially infinite) while loop, return after
collecting a budgeted number of completions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Acked-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index cb4c882b97fe..0c3b88ea5edb 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -74,6 +74,7 @@ struct rpcrdma_ia { * RDMA Endpoint -- one per transport instance */ +#define RPCRDMA_WC_BUDGET (128) #define RPCRDMA_POLLSIZE (16) struct rpcrdma_ep { |