--- /dev/null
+From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
+Subject: [RFC][PATCH 03/10] cifs: register CIFS for caching
+Date: Tue, 22 Jun 2010 20:53:09 +0530
+Lines: 174
+Message-ID: <1277220189-3485-1-git-send-email-sjayaraman@suse.de>
+References: <yes>
+Cc: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
+ linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
+To: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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+
+Define CIFS for FS-Cache and register for caching. Upon registration the
+top-level index object cookie will be stuck to the netfs definition by
+FS-Cache.
+
+Signed-off-by: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
+---
+ fs/cifs/Makefile | 2 ++
+ fs/cifs/cache.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
+ fs/cifs/cifsfs.c | 8 ++++++++
+ fs/cifs/fscache.h | 40 ++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 103 insertions(+), 0 deletions(-)
+ create mode 100644 fs/cifs/cache.c
+ create mode 100644 fs/cifs/fscache.h
+
+diff --git a/fs/cifs/Makefile b/fs/cifs/Makefile
+index 9948c00..e2de709 100644
+--- a/fs/cifs/Makefile
++++ b/fs/cifs/Makefile
+@@ -11,3 +11,5 @@ cifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
+ cifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
+
+ cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
++
++cifs-$(CONFIG_CIFS_FSCACHE) += cache.o
+diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
+new file mode 100644
+index 0000000..1080b96
+--- /dev/null
++++ b/fs/cifs/cache.c
+@@ -0,0 +1,53 @@
++/*
++ * fs/cifs/cache.c - CIFS filesystem cache index structure definitions
++ *
++ * Copyright (c) 2010 Novell, Inc.
++ * Authors(s): Suresh Jayaraman (sjayaraman-l3A5Bk7waGM@public.gmane.org>
++ *
++ * This library is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License as published
++ * by the Free Software Foundation; either version 2.1 of the License, or
++ * (at your option) any later version.
++ *
++ * This library is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
++ * the GNU Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General Public License
++ * along with this library; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/sched.h>
++#include <linux/mm.h>
++
++#include "fscache.h"
++#include "cifsglob.h"
++#include "cifs_debug.h"
++
++/*
++ * CIFS filesystem definition for FS-Cache
++ */
++struct fscache_netfs cifs_fscache_netfs = {
++ .name = "cifs",
++ .version = 0,
++};
++
++/*
++ * Register CIFS for caching with FS-Cache
++ */
++int cifs_fscache_register(void)
++{
++ return fscache_register_netfs(&cifs_fscache_netfs);
++}
++
++/*
++ * Unregister CIFS for caching
++ */
++void cifs_fscache_unregister(void)
++{
++ fscache_unregister_netfs(&cifs_fscache_netfs);
++}
++
+diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
+index 484e52b..c2a7aa9 100644
+--- a/fs/cifs/cifsfs.c
++++ b/fs/cifs/cifsfs.c
+@@ -47,6 +47,7 @@
+ #include <linux/key-type.h>
+ #include "dns_resolve.h"
+ #include "cifs_spnego.h"
++#include "fscache.h"
+ #define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
+
+ int cifsFYI = 0;
+@@ -902,6 +903,10 @@ init_cifs(void)
+ cFYI(1, "cifs_max_pending set to max of 256");
+ }
+
++ rc = cifs_fscache_register();
++ if (rc)
++ goto out;
++
+ rc = cifs_init_inodecache();
+ if (rc)
+ goto out_clean_proc;
+@@ -949,8 +954,10 @@ init_cifs(void)
+ cifs_destroy_mids();
+ out_destroy_inodecache:
+ cifs_destroy_inodecache();
++ cifs_fscache_unregister();
+ out_clean_proc:
+ cifs_proc_clean();
++ out:
+ return rc;
+ }
+
+@@ -959,6 +966,7 @@ exit_cifs(void)
+ {
+ cFYI(DBG2, "exit_cifs");
+ cifs_proc_clean();
++ cifs_fscache_unregister();
+ #ifdef CONFIG_CIFS_DFS_UPCALL
+ cifs_dfs_release_automount_timer();
+ unregister_key_type(&key_type_dns_resolver);
+diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h
+new file mode 100644
+index 0000000..cec9e2b
+--- /dev/null
++++ b/fs/cifs/fscache.h
+@@ -0,0 +1,40 @@
++/*
++ * fs/cifs/fscache.h - CIFS filesystem cache interface definitions
++ *
++ * Copyright (c) 2010 Novell, Inc.
++ * Authors(s): Suresh Jayaraman (sjayaraman-l3A5Bk7waGM@public.gmane.org>
++ *
++ * This library is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License as published
++ * by the Free Software Foundation; either version 2.1 of the License, or
++ * (at your option) any later version.
++ *
++ * This library is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
++ * the GNU Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General Public License
++ * along with this library; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ */
++#ifndef _CIFS_FSCACHE_H
++#define _CIFS_FSCACHE_H
++
++#include <linux/fscache.h>
++#include "cifsglob.h"
++
++#ifdef CONFIG_CIFS_FSCACHE
++
++extern struct fscache_netfs cifs_fscache_netfs;
++
++extern int cifs_fscache_register(void);
++extern void cifs_fscache_unregister(void);
++
++#else /* CONFIG_CIFS_FSCACHE */
++static inline int cifs_fscache_register(void) { return 0; }
++static inline void cifs_fscache_unregister(void) {}
++
++#endif /* CONFIG_CIFS_FSCACHE */
++
++#endif /* _CIFS_FSCACHE_H */
+--
+1.6.4.2
+
+
+
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