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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-19 04:14:46 +0300
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-19 04:14:46 +0300
commit9045d47ea362e6a3727ee3f1b69a1b656976772e (patch)
tree7d8331cd5d1e5f10b03151172ae5bd7b1b46eeb6 /drivers
parentfe61f1d737f7804e0bd440ace9724e669e2c2906 (diff)
downloadlinux-9045d47ea362e6a3727ee3f1b69a1b656976772e.tar.xz
Revert "xen/privcmd: create address space to allow writable mmaps"
This reverts commit 24a89b5be4cf2b7f1b49b56b6cb4a7b71fccf241. We should no longer need an address space now that we're correctly setting VM_PFNMAP on our vmas. Conflicts: drivers/xen/xenfs/super.c Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/xen/xenfs/super.c40
1 files changed, 4 insertions, 36 deletions
diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c
index 990ee42167a1..1aa389719846 100644
--- a/drivers/xen/xenfs/super.c
+++ b/drivers/xen/xenfs/super.c
@@ -12,8 +12,6 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/magic.h>
-#include <linux/mm.h>
-#include <linux/backing-dev.h>
#include <xen/xen.h>
@@ -24,28 +22,12 @@
MODULE_DESCRIPTION("Xen filesystem");
MODULE_LICENSE("GPL");
-static int xenfs_set_page_dirty(struct page *page)
-{
- return !TestSetPageDirty(page);
-}
-
-static const struct address_space_operations xenfs_aops = {
- .set_page_dirty = xenfs_set_page_dirty,
-};
-
-static struct backing_dev_info xenfs_backing_dev_info = {
- .ra_pages = 0, /* No readahead */
- .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK,
-};
-
static struct inode *xenfs_make_inode(struct super_block *sb, int mode)
{
struct inode *ret = new_inode(sb);
if (ret) {
ret->i_mode = mode;
- ret->i_mapping->a_ops = &xenfs_aops;
- ret->i_mapping->backing_dev_info = &xenfs_backing_dev_info;
ret->i_uid = ret->i_gid = 0;
ret->i_blocks = 0;
ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
@@ -137,25 +119,11 @@ static struct file_system_type xenfs_type = {
static int __init xenfs_init(void)
{
- int err;
- if (!xen_domain()) {
- printk(KERN_INFO "xenfs: not registering filesystem on non-xen platform\n");
- return 0;
- }
-
- err = register_filesystem(&xenfs_type);
- if (err) {
- printk(KERN_ERR "xenfs: Unable to register filesystem!\n");
- goto out;
- }
-
- err = bdi_init(&xenfs_backing_dev_info);
- if (err)
- unregister_filesystem(&xenfs_type);
-
- out:
+ if (xen_domain())
+ return register_filesystem(&xenfs_type);
- return err;
+ printk(KERN_INFO "XENFS: not registering filesystem on non-xen platform\n");
+ return 0;
}
static void __exit xenfs_exit(void)