Re: [PATCH 5/7] NFS: Use local caching [try #12]

From: Jeff Garzik
Date: Fri Aug 18 2006 - 14:39:36 EST


Chuck Lever wrote:
Hi David-

On 8/18/06, David Howells <dhowells@xxxxxxxxxx> wrote:
The attached patch makes it possible for the NFS filesystem to make use of the
network filesystem local caching service (FS-Cache).

To be able to use this, an updated mount program is required. This can be
obtained from:

http://people.redhat.com/steved/cachefs/util-linux/

To mount an NFS filesystem to use caching, add an "fsc" option to the mount:

mount warthog:/ /a -o fsc

Signed-Off-By: David Howells <dhowells@xxxxxxxxxx>
---

fs/Kconfig | 7 +
fs/nfs/Makefile | 1
fs/nfs/client.c | 11 +
fs/nfs/file.c | 49 ++++-
fs/nfs/fscache.c | 348 ++++++++++++++++++++++++++++++++
fs/nfs/fscache.h | 476 ++++++++++++++++++++++++++++++++++++++++++++
fs/nfs/inode.c | 21 ++
fs/nfs/internal.h | 32 +++
fs/nfs/pagelist.c | 3
fs/nfs/read.c | 30 +++
fs/nfs/super.c | 1
fs/nfs/sysctl.c | 43 ++++
fs/nfs/write.c | 11 +
include/linux/nfs4_mount.h | 1
include/linux/nfs_fs.h | 5
include/linux/nfs_fs_sb.h | 5
include/linux/nfs_mount.h | 1
17 files changed, 1035 insertions(+), 10 deletions(-)

diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
new file mode 100644
index 0000000..94d5e3a
--- /dev/null
+++ b/fs/nfs/fscache.c
@@ -0,0 +1,348 @@
+/* fscache.c: NFS filesystem cache interface
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@xxxxxxxxxx)
+ *

+
+static uint16_t nfs_server_get_key(const void *cookie_netfs_data,
+ void *buffer, uint16_t bufmax)
+{

Why don't you use the function declaration style that is used in the
rest of the NFS client? All the parameters belong on one line, don't
they?

Normally, one wraps the line if it exceeds 80 columns...

Jeff



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