---

yaml
---
r: 18934
b: refs/heads/master
c: 147b31c
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a374a48ffbd7d1ffd40d1d30d2751df159a1aca7
+refs/heads/master: 147b31cf09ee493aa71c87c0dd2eef74b6b2aeba

trunk/fs/9p/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_9P_FS) := 9p2000.o
 	conv.o \
 	vfs_super.o \
 	vfs_inode.o \
+	vfs_addr.o \
 	vfs_file.o \
 	vfs_dir.o \
 	vfs_dentry.o \

trunk/fs/9p/v9fs_vfs.h

@@ -39,6 +39,7 @@
  */
 
 extern struct file_system_type v9fs_fs_type;
+extern struct address_space_operations v9fs_addr_operations;
 extern struct file_operations v9fs_file_operations;
 extern struct file_operations v9fs_dir_operations;
 extern struct dentry_operations v9fs_dentry_operations;

trunk/fs/9p/vfs_addr.c

@@ -0,0 +1,109 @@
+/*
+ *  linux/fs/9p/vfs_addr.c
+ *
+ * This file contians vfs address (mmap) ops for 9P2000.
+ *
+ *  Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
+ *  Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to:
+ *  Free Software Foundation
+ *  51 Franklin Street, Fifth Floor
+ *  Boston, MA  02111-1301  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/smp_lock.h>
+#include <linux/inet.h>
+#include <linux/version.h>
+#include <linux/pagemap.h>
+#include <linux/idr.h>
+
+#include "debug.h"
+#include "v9fs.h"
+#include "9p.h"
+#include "v9fs_vfs.h"
+#include "fid.h"
+
+/**
+ * v9fs_vfs_readpage - read an entire page in from 9P
+ *
+ * @file: file being read
+ * @page: structure to page
+ *
+ */
+
+static int v9fs_vfs_readpage(struct file *filp, struct page *page)
+{
+	char *buffer = NULL;
+	int retval = -EIO;
+	loff_t offset = page_offset(page);
+	int count = PAGE_CACHE_SIZE;
+	struct inode *inode = filp->f_dentry->d_inode;
+	struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode);
+	int rsize = v9ses->maxdata - V9FS_IOHDRSZ;
+	struct v9fs_fid *v9f = filp->private_data;
+	struct v9fs_fcall *fcall = NULL;
+	int fid = v9f->fid;
+	int total = 0;
+	int result = 0;
+
+	buffer = kmap(page);
+	do {
+		if (count < rsize)
+			rsize = count;
+
+		result = v9fs_t_read(v9ses, fid, offset, rsize, &fcall);
+
+		if (result < 0) {
+			printk(KERN_ERR "v9fs_t_read returned %d\n",
+			       result);
+
+			kfree(fcall);
+			goto UnmapAndUnlock;
+		} else
+			offset += result;
+
+		memcpy(buffer, fcall->params.rread.data, result);
+
+		count -= result;
+		buffer += result;
+		total += result;
+
+		kfree(fcall);
+
+		if (result < rsize)
+			break;
+	} while (count);
+
+	memset(buffer, 0, count);
+	flush_dcache_page(page);
+	SetPageUptodate(page);
+	retval = 0;
+
+UnmapAndUnlock:
+	kunmap(page);
+	unlock_page(page);
+	return retval;
+}
+
+struct address_space_operations v9fs_addr_operations = {
+      .readpage = v9fs_vfs_readpage,
+};

trunk/fs/9p/vfs_file.c

@@ -289,6 +289,9 @@ v9fs_file_write(struct file *filp, const char __user * data,
 		total += result;
 	} while (count);
 
+	if(inode->i_mapping->nrpages)
+		invalidate_inode_pages2(inode->i_mapping);
+
 	return total;
 }
 
@@ -299,4 +302,5 @@ struct file_operations v9fs_file_operations = {
 	.open = v9fs_file_open,
 	.release = v9fs_dir_release,
 	.lock = v9fs_file_lock,
+	.mmap = generic_file_mmap,
 };

trunk/fs/9p/vfs_inode.c

@@ -177,6 +177,7 @@ struct inode *v9fs_get_inode(struct super_block *sb, int mode)
 		inode->i_blocks = 0;
 		inode->i_rdev = 0;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+		inode->i_mapping->a_ops = &v9fs_addr_operations;
 
 		switch (mode & S_IFMT) {
 		case S_IFIFO: