NFS: reduce latency by using conditional rescheduling in nfs_scan_list

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 68f6bf1..8d2642f 100644 (file)
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -429,7 +429,8 @@ int nfs_scan_list(struct nfs_inode *nfsi,
                                        goto out;
                        }
                }
-
+               /* for latency reduction */
+               cond_resched_lock(&nfsi->req_lock);
        }
 out:
        return res;