diff --git a/ldiskfs/kernel_patches/patches/iopen-2.6.22-vanilla.patch b/ldiskfs/kernel_patches/patches/iopen-2.6.22-vanilla.patch
new file mode 100644
index 0000000000000000000000000000000000000000..9b737845714c4c4521bb4a34bc85b06b1ad5d190
--- /dev/null
+++ b/ldiskfs/kernel_patches/patches/iopen-2.6.22-vanilla.patch
@@ -0,0 +1,450 @@
+Index: linux-2.6.22.15/fs/ext3/iopen.c
+===================================================================
+--- /dev/null
++++ linux-2.6.22.15/fs/ext3/iopen.c
+@@ -0,0 +1,256 @@
++/*
++ * linux/fs/ext3/iopen.c
++ *
++ * Special support for open by inode number
++ *
++ * Copyright (C) 2001 by Theodore Ts'o (tytso@alum.mit.edu).
++ *
++ * This file may be redistributed under the terms of the GNU General
++ * Public License.
++ *
++ *
++ * Invariants:
++ * - there is only ever a single DCACHE_NFSD_DISCONNECTED dentry alias
++ * for an inode at one time.
++ * - there are never both connected and DCACHE_NFSD_DISCONNECTED dentry
++ * aliases on an inode at the same time.
++ *
++ * If we have any connected dentry aliases for an inode, use one of those
++ * in iopen_lookup(). Otherwise, we instantiate a single NFSD_DISCONNECTED
++ * dentry for this inode, which thereafter will be found by the dcache
++ * when looking up this inode number in __iopen__, so we don't return here
++ * until it is gone.
++ *
++ * If we get an inode via a regular name lookup, then we "rename" the
++ * NFSD_DISCONNECTED dentry to the proper name and parent. This ensures
++ * existing users of the disconnected dentry will continue to use the same
++ * dentry as the connected users, and there will never be both kinds of
++ * dentry aliases at one time.
++ */
++
++#include <linux/sched.h>
++#include <linux/fs.h>
++#include <linux/ext3_jbd.h>
++#include <linux/jbd.h>
++#include <linux/ext3_fs.h>
++#include <linux/smp_lock.h>
++#include <linux/dcache.h>
++#include <linux/security.h>
++#include "iopen.h"
++
++#ifndef assert
++#define assert(test) J_ASSERT(test)
++#endif
++
++#define IOPEN_NAME_LEN 32
++
++/*
++ * This implements looking up an inode by number.
++ */
++static struct dentry *iopen_lookup(struct inode * dir, struct dentry *dentry,
++ struct nameidata *nd)
++{
++ struct inode *inode;
++ unsigned long ino;
++ struct list_head *lp;
++ struct dentry *alternate;
++ char buf[IOPEN_NAME_LEN];
++
++ if (dentry->d_name.len >= IOPEN_NAME_LEN)
++ return ERR_PTR(-ENAMETOOLONG);
++
++ memcpy(buf, dentry->d_name.name, dentry->d_name.len);
++ buf[dentry->d_name.len] = 0;
++
++ if (strcmp(buf, ".") == 0)
++ ino = dir->i_ino;
++ else if (strcmp(buf, "..") == 0)
++ ino = EXT3_ROOT_INO;
++ else
++ ino = simple_strtoul(buf, 0, 0);
++
++ if ((ino != EXT3_ROOT_INO &&
++ //ino != EXT3_ACL_IDX_INO &&
++ //ino != EXT3_ACL_DATA_INO &&
++ ino < EXT3_FIRST_INO(dir->i_sb)) ||
++ ino > le32_to_cpu(EXT3_SB(dir->i_sb)->s_es->s_inodes_count))
++ return ERR_PTR(-ENOENT);
++
++ inode = iget(dir->i_sb, ino);
++ if (!inode)
++ return ERR_PTR(-EACCES);
++ if (is_bad_inode(inode)) {
++ iput(inode);
++ return ERR_PTR(-ENOENT);
++ }
++
++ assert(list_empty(&dentry->d_alias)); /* d_instantiate */
++ assert(d_unhashed(dentry)); /* d_rehash */
++
++ /* preferrably return a connected dentry */
++ spin_lock(&dcache_lock);
++ list_for_each(lp, &inode->i_dentry) {
++ alternate = list_entry(lp, struct dentry, d_alias);
++ assert(!(alternate->d_flags & DCACHE_DISCONNECTED));
++ }
++
++ if (!list_empty(&inode->i_dentry)) {
++ alternate = list_entry(inode->i_dentry.next,
++ struct dentry, d_alias);
++ dget_locked(alternate);
++ spin_lock(&alternate->d_lock);
++ alternate->d_flags |= DCACHE_REFERENCED;
++ spin_unlock(&alternate->d_lock);
++ iput(inode);
++ spin_unlock(&dcache_lock);
++ return alternate;
++ }
++ dentry->d_flags |= DCACHE_DISCONNECTED;
++
++ /* d_add(), but don't drop dcache_lock before adding dentry to inode */
++ list_add(&dentry->d_alias, &inode->i_dentry); /* d_instantiate */
++ dentry->d_inode = inode;
++
++ d_rehash_cond(dentry, 0);
++ spin_unlock(&dcache_lock);
++
++ return NULL;
++}
++
++/* This function is spliced into ext3_lookup and does the move of a
++ * disconnected dentry (if it exists) to a connected dentry.
++ */
++struct dentry *iopen_connect_dentry(struct dentry *dentry, struct inode *inode,
++ int rehash)
++{
++ struct dentry *tmp, *goal = NULL;
++ struct list_head *lp;
++
++ /* verify this dentry is really new */
++ assert(dentry->d_inode == NULL);
++ assert(list_empty(&dentry->d_alias)); /* d_instantiate */
++ if (rehash)
++ assert(d_unhashed(dentry)); /* d_rehash */
++ assert(list_empty(&dentry->d_subdirs));
++
++ spin_lock(&dcache_lock);
++ if (!inode)
++ goto do_rehash;
++
++ if (!test_opt(inode->i_sb, IOPEN))
++ goto do_instantiate;
++
++ /* preferrably return a connected dentry */
++ list_for_each(lp, &inode->i_dentry) {
++ tmp = list_entry(lp, struct dentry, d_alias);
++ if (tmp->d_flags & DCACHE_DISCONNECTED) {
++ assert(tmp->d_alias.next == &inode->i_dentry);
++ assert(tmp->d_alias.prev == &inode->i_dentry);
++ goal = tmp;
++ dget_locked(goal);
++ break;
++ }
++ }
++
++ if (!goal)
++ goto do_instantiate;
++
++ /* Move the goal to the de hash queue */
++ goal->d_flags &= ~DCACHE_DISCONNECTED;
++ security_d_instantiate(goal, inode);
++ __d_drop(dentry);
++ d_rehash_cond(dentry, 0);
++ d_move_locked(goal, dentry);
++ spin_unlock(&dcache_lock);
++ iput(inode);
++
++ return goal;
++
++ /* d_add(), but don't drop dcache_lock before adding dentry to inode */
++do_instantiate:
++ list_add(&dentry->d_alias, &inode->i_dentry); /* d_instantiate */
++ dentry->d_inode = inode;
++do_rehash:
++ if (rehash)
++ d_rehash_cond(dentry, 0);
++ spin_unlock(&dcache_lock);
++
++ return NULL;
++}
++
++/*
++ * These are the special structures for the iopen pseudo directory.
++ */
++
++static struct inode_operations iopen_inode_operations = {
++ lookup: iopen_lookup, /* BKL held */
++};
++
++static struct file_operations iopen_file_operations = {
++ read: generic_read_dir,
++};
++
++static int match_dentry(struct dentry *dentry, const char *name)
++{
++ int len;
++
++ len = strlen(name);
++ if (dentry->d_name.len != len)
++ return 0;
++ if (strncmp(dentry->d_name.name, name, len))
++ return 0;
++ return 1;
++}
++
++/*
++ * This function is spliced into ext3_lookup and returns 1 the file
++ * name is __iopen__ and dentry has been filled in appropriately.
++ */
++int ext3_check_for_iopen(struct inode *dir, struct dentry *dentry)
++{
++ struct inode *inode;
++
++ if (dir->i_ino != EXT3_ROOT_INO ||
++ !test_opt(dir->i_sb, IOPEN) ||
++ !match_dentry(dentry, "__iopen__"))
++ return 0;
++
++ inode = iget(dir->i_sb, EXT3_BAD_INO);
++
++ if (!inode)
++ return 0;
++ d_add(dentry, inode);
++ return 1;
++}
++
++/*
++ * This function is spliced into read_inode; it returns 1 if inode
++ * number is the one for /__iopen__, in which case the inode is filled
++ * in appropriately. Otherwise, this fuction returns 0.
++ */
++int ext3_iopen_get_inode(struct inode *inode)
++{
++ if (inode->i_ino != EXT3_BAD_INO)
++ return 0;
++
++ inode->i_mode = S_IFDIR | S_IRUSR | S_IXUSR;
++ if (test_opt(inode->i_sb, IOPEN_NOPRIV))
++ inode->i_mode |= 0777;
++ inode->i_uid = 0;
++ inode->i_gid = 0;
++ inode->i_nlink = 1;
++ inode->i_size = 4096;
++ inode->i_atime = CURRENT_TIME;
++ inode->i_ctime = CURRENT_TIME;
++ inode->i_mtime = CURRENT_TIME;
++ EXT3_I(inode)->i_dtime = 0;
++ inode->i_blocks = 0;
++ inode->i_version = 1;
++ inode->i_generation = 0;
++
++ inode->i_op = &iopen_inode_operations;
++ inode->i_fop = &iopen_file_operations;
++ inode->i_mapping->a_ops = 0;
++
++ return 1;
++}
+Index: linux-2.6.22.15/fs/ext3/iopen.h
+===================================================================
+--- /dev/null
++++ linux-2.6.22.15/fs/ext3/iopen.h
+@@ -0,0 +1,19 @@
++/*
++ * iopen.h
++ *
++ * Special support for opening files by inode number.
++ *
++ * Copyright (C) 2001 by Theodore Ts'o (tytso@alum.mit.edu).
++ *
++ * This file may be redistributed under the terms of the GNU General
++ * Public License.
++ */
++
++extern int ext3_check_for_iopen(struct inode *dir, struct dentry *dentry);
++extern int ext3_iopen_get_inode(struct inode *inode);
++extern struct dentry *iopen_connect_dentry(struct dentry *dentry,
++ struct inode *inode, int rehash);
++
++#if !defined(HAVE_D_MOVE_LOCKED) && defined(HAVE___D_MOVE)
++#define d_move_locked(dentry, target) __d_move(dentry, target)
++#endif
+Index: linux-2.6.22.15/fs/ext3/inode.c
+===================================================================
+--- linux-2.6.22.15.orig/fs/ext3/inode.c
++++ linux-2.6.22.15/fs/ext3/inode.c
+@@ -37,6 +37,7 @@
+ #include <linux/uio.h>
+ #include <linux/bio.h>
+ #include "xattr.h"
++#include "iopen.h"
+ #include "acl.h"
+
+ static int ext3_writepage_trans_blocks(struct inode *inode);
+@@ -2604,6 +2605,8 @@ void ext3_read_inode(struct inode * inod
+ ei->i_default_acl = EXT3_ACL_NOT_CACHED;
+ #endif
+ ei->i_block_alloc_info = NULL;
++ if (ext3_iopen_get_inode(inode))
++ return;
+
+ if (__ext3_get_inode_loc(inode, &iloc, 0))
+ goto bad_inode;
+Index: linux-2.6.22.15/fs/ext3/super.c
+===================================================================
+--- linux-2.6.22.15.orig/fs/ext3/super.c
++++ linux-2.6.22.15/fs/ext3/super.c
+@@ -674,6 +674,7 @@ enum {
+ Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
+ Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
+ Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
++ Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
+ Opt_grpquota
+ };
+
+@@ -723,6 +724,9 @@ static match_table_t tokens = {
+ {Opt_noquota, "noquota"},
+ {Opt_quota, "quota"},
+ {Opt_usrquota, "usrquota"},
++ {Opt_iopen, "iopen"},
++ {Opt_noiopen, "noiopen"},
++ {Opt_iopen_nopriv, "iopen_nopriv"},
+ {Opt_barrier, "barrier=%u"},
+ {Opt_err, NULL},
+ {Opt_resize, "resize"},
+@@ -1038,6 +1042,18 @@ clear_qf_name:
+ else
+ clear_opt(sbi->s_mount_opt, BARRIER);
+ break;
++ case Opt_iopen:
++ set_opt (sbi->s_mount_opt, IOPEN);
++ clear_opt (sbi->s_mount_opt, IOPEN_NOPRIV);
++ break;
++ case Opt_noiopen:
++ clear_opt (sbi->s_mount_opt, IOPEN);
++ clear_opt (sbi->s_mount_opt, IOPEN_NOPRIV);
++ break;
++ case Opt_iopen_nopriv:
++ set_opt (sbi->s_mount_opt, IOPEN);
++ set_opt (sbi->s_mount_opt, IOPEN_NOPRIV);
++ break;
+ case Opt_ignore:
+ break;
+ case Opt_resize:
+Index: linux-2.6.22.15/fs/ext3/namei.c
+===================================================================
+--- linux-2.6.22.15.orig/fs/ext3/namei.c
++++ linux-2.6.22.15/fs/ext3/namei.c
+@@ -39,6 +39,7 @@
+
+ #include "namei.h"
+ #include "xattr.h"
++#include "iopen.h"
+ #include "acl.h"
+
+ /*
+@@ -1047,6 +1048,9 @@ static struct dentry *ext3_lookup(struct
+ if (dentry->d_name.len > EXT3_NAME_LEN)
+ return ERR_PTR(-ENAMETOOLONG);
+
++ if (ext3_check_for_iopen(dir, dentry))
++ return NULL;
++
+ bh = ext3_find_entry(dentry, &de);
+ inode = NULL;
+ if (bh) {
+@@ -1062,7 +1066,8 @@ static struct dentry *ext3_lookup(struct
+ if (!inode)
+ return ERR_PTR(-EACCES);
+ }
+- return d_splice_alias(inode, dentry);
++
++ return iopen_connect_dentry(dentry, inode, 1);
+ }
+
+
+@@ -2123,10 +2128,6 @@ static int ext3_rmdir (struct inode * di
+ inode->i_nlink);
+ inode->i_version++;
+ clear_nlink(inode);
+- /* There's no need to set i_disksize: the fact that i_nlink is
+- * zero will ensure that the right thing happens during any
+- * recovery. */
+- inode->i_size = 0;
+ ext3_orphan_add(handle, inode);
+ inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
+ ext3_mark_inode_dirty(handle, inode);
+@@ -2250,6 +2251,23 @@ out_stop:
+ return err;
+ }
+
++/* Like ext3_add_nondir() except for call to iopen_connect_dentry */
++static int ext3_add_link(handle_t *handle, struct dentry *dentry,
++ struct inode *inode)
++{
++ int err = ext3_add_entry(handle, dentry, inode);
++ if (!err) {
++ err = ext3_mark_inode_dirty(handle, inode);
++ if (err == 0) {
++ dput(iopen_connect_dentry(dentry, inode, 0));
++ return 0;
++ }
++ }
++ ext3_dec_count(handle, inode);
++ iput(inode);
++ return err;
++}
++
+ static int ext3_link (struct dentry * old_dentry,
+ struct inode * dir, struct dentry *dentry)
+ {
+@@ -2279,7 +2297,8 @@ retry:
+ inc_nlink(inode);
+ atomic_inc(&inode->i_count);
+
+- err = ext3_add_nondir(handle, dentry, inode);
++ err = ext3_add_link(handle, dentry, inode);
++ ext3_orphan_del(handle, inode);
+ ext3_journal_stop(handle);
+ if (err == -ENOSPC && ext3_should_retry_alloc(dir->i_sb, &retries))
+ goto retry;
+Index: linux-2.6.22.15/fs/ext3/Makefile
+===================================================================
+--- linux-2.6.22.15.orig/fs/ext3/Makefile
++++ linux-2.6.22.15/fs/ext3/Makefile
+@@ -4,7 +4,7 @@
+
+ obj-$(CONFIG_EXT3_FS) += ext3.o
+
+-ext3-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
++ext3-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o iopen.o \
+ ioctl.o namei.o super.o symlink.o hash.o resize.o ext3_jbd.o
+
+ ext3-$(CONFIG_EXT3_FS_XATTR) += xattr.o xattr_user.o xattr_trusted.o
+Index: linux-2.6.22.15/include/linux/ext3_fs.h
+===================================================================
+--- linux-2.6.22.15.orig/include/linux/ext3_fs.h
++++ linux-2.6.22.15/include/linux/ext3_fs.h
+@@ -384,6 +384,8 @@ struct ext3_inode {
+ #define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
+ #define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
+ #define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
++#define EXT3_MOUNT_IOPEN 0x400000 /* Allow access via iopen */
++#define EXT3_MOUNT_IOPEN_NOPRIV 0x800000/* Make iopen world-readable */
+
+ /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
+ #ifndef _LINUX_EXT2_FS_H