NFS: readdir with vmapped pages

We can use vmapped pages to read more information from the network at once.
This will reduce the number of calls needed to complete a readdir.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
[trondmy: Added #include for linux/vmalloc.h> in fs/nfs/dir.c]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 5f01f42b3991..876ba8592706 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -903,8 +903,8 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo *
         server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
 
         server->dtsize = nfs_block_size(fsinfo->dtpref, NULL);
-        if (server->dtsize > PAGE_CACHE_SIZE)
-                server->dtsize = PAGE_CACHE_SIZE;
+        if (server->dtsize > PAGE_CACHE_SIZE * NFS_MAX_READDIR_PAGES)
+                server->dtsize = PAGE_CACHE_SIZE * NFS_MAX_READDIR_PAGES;
         if (server->dtsize > server->rsize)
                 server->dtsize = server->rsize;