NFS: reduce latency by using conditional rescheduling in nfs_scan_list

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

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 68f6bf122006..8d2642f24b8f 100644
--- 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;