summaryrefslogtreecommitdiffstats
path: root/net/sunrpc
diff options
context:
space:
mode:
authorChuck Lever <chuck.lever@oracle.com>2019-08-19 18:51:49 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-08-21 15:04:59 -0400
commit435eba4ae0692e2f3d62988f8648efd65c935b6a (patch)
tree8dd34dc5fecde5ab87625900e8e72b0ff7791ca7 /net/sunrpc
parent1738de336ebc9f8d4bb1b3126c5417a5923a660a (diff)
downloadlinux-435eba4ae0692e2f3d62988f8648efd65c935b6a.tar.bz2
xprtrdma: Optimize rpcrdma_post_recvs()
Micro-optimization: In rpcrdma_post_recvs, since commit e340c2d6ef2a ("xprtrdma: Reduce the doorbell rate (Receive)"), the common case is to return without doing anything. Found with perf. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprtrdma/verbs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index db90083ed35b..ac2abf4578b9 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1465,7 +1465,7 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
count = 0;
needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);
- if (ep->rep_receive_count > needed)
+ if (likely(ep->rep_receive_count > needed))
goto out;
needed -= ep->rep_receive_count;
if (!temp)