commit 56e4ebf877b6043c289bda32a5a7385b80c17dee
author Bryan Schumaker <bjschuma@netapp.com> Wed Oct 20 15:44:37 2010 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> Sat Oct 23 15:27:35 2010 -0400
tree 160ae8d5b5ee3871d02a9f5283187430c9ec5ffe
parent afa8ccc978c24d8ab22e3b3b8cbd1054c84c070b

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>

fs/nfs/client.c

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 5f01f42..876ba85 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -903,8 +903,8 @@
 	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;