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diff -Nur linux-3.1.4.orig/include/linux/Kbuild linux-3.1.4/include/linux/Kbuild
--- linux-3.1.4.orig/include/linux/Kbuild 2011-11-28 23:48:14.000000000 +0100
+++ linux-3.1.4/include/linux/Kbuild 2011-12-01 12:44:17.000000000 +0100
@@ -65,6 +65,7 @@
header-y += atmsap.h
header-y += atmsvc.h
header-y += audit.h
+header-y += aufs_type.h
header-y += auto_fs.h
header-y += auto_fs4.h
header-y += auxvec.h
diff -Nur linux-3.1.4.orig/include/linux/aufs_type.h linux-3.1.4/include/linux/aufs_type.h
--- linux-3.1.4.orig/include/linux/aufs_type.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-3.1.4/include/linux/aufs_type.h 2011-12-01 12:44:17.000000000 +0100
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2005-2011 Junjiro R. Okajima
+ *
+ * This program, aufs 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 the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __AUFS_TYPE_H__
+#define __AUFS_TYPE_H__
+
+#include <linux/ioctl.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/types.h>
+
+#define AUFS_VERSION "2.1-standalone.tree-36-20110110"
+
+/* todo? move this to linux-2.6.19/include/magic.h */
+#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_BRANCH_MAX_127
+typedef __s8 aufs_bindex_t;
+#define AUFS_BRANCH_MAX 127
+#else
+typedef __s16 aufs_bindex_t;
+#ifdef CONFIG_AUFS_BRANCH_MAX_511
+#define AUFS_BRANCH_MAX 511
+#elif defined(CONFIG_AUFS_BRANCH_MAX_1023)
+#define AUFS_BRANCH_MAX 1023
+#elif defined(CONFIG_AUFS_BRANCH_MAX_32767)
+#define AUFS_BRANCH_MAX 32767
+#endif
+#endif
+
+#ifdef __KERNEL__
+#ifndef AUFS_BRANCH_MAX
+#error unknown CONFIG_AUFS_BRANCH_MAX value
+#endif
+#endif /* __KERNEL__ */
+
+/* ---------------------------------------------------------------------- */
+
+#define AUFS_NAME "aufs"
+#define AUFS_FSTYPE AUFS_NAME
+
+#define AUFS_ROOT_INO 2
+#define AUFS_FIRST_INO 11
+
+#define AUFS_WH_PFX ".wh."
+#define AUFS_WH_PFX_LEN ((int)sizeof(AUFS_WH_PFX) - 1)
+#define AUFS_WH_TMP_LEN 4
+/* a limit for rmdir/rename a dir */
+#define AUFS_MAX_NAMELEN (NAME_MAX \
+ - AUFS_WH_PFX_LEN * 2 /* doubly whiteouted */\
+ - 1 /* dot */\
+ - AUFS_WH_TMP_LEN) /* hex */
+#define AUFS_XINO_FNAME "." AUFS_NAME ".xino"
+#define AUFS_XINO_DEFPATH "/tmp/" AUFS_XINO_FNAME
+#define AUFS_XINO_TRUNC_INIT 64 /* blocks */
+#define AUFS_XINO_TRUNC_STEP 4 /* blocks */
+#define AUFS_DIRWH_DEF 3
+#define AUFS_RDCACHE_DEF 10 /* seconds */
+#define AUFS_RDCACHE_MAX 3600 /* seconds */
+#define AUFS_RDBLK_DEF 512 /* bytes */
+#define AUFS_RDHASH_DEF 32
+#define AUFS_WKQ_NAME AUFS_NAME "d"
+#define AUFS_WKQ_PRE_NAME AUFS_WKQ_NAME "_pre"
+#define AUFS_MFS_DEF_SEC 30 /* seconds */
+#define AUFS_MFS_MAX_SEC 3600 /* seconds */
+#define AUFS_PLINK_WARN 100 /* number of plinks */
+
+/* pseudo-link maintenace under /proc */
+#define AUFS_PLINK_MAINT_NAME "plink_maint"
+#define AUFS_PLINK_MAINT_DIR "fs/" AUFS_NAME
+#define AUFS_PLINK_MAINT_PATH AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME
+
+#define AUFS_DIROPQ_NAME AUFS_WH_PFX ".opq" /* whiteouted doubly */
+#define AUFS_WH_DIROPQ AUFS_WH_PFX AUFS_DIROPQ_NAME
+
+#define AUFS_BASE_NAME AUFS_WH_PFX AUFS_NAME
+#define AUFS_PLINKDIR_NAME AUFS_WH_PFX "plnk"
+#define AUFS_ORPHDIR_NAME AUFS_WH_PFX "orph"
+
+/* doubly whiteouted */
+#define AUFS_WH_BASE AUFS_WH_PFX AUFS_BASE_NAME
+#define AUFS_WH_PLINKDIR AUFS_WH_PFX AUFS_PLINKDIR_NAME
+#define AUFS_WH_ORPHDIR AUFS_WH_PFX AUFS_ORPHDIR_NAME
+
+/* branch permission */
+#define AUFS_BRPERM_RW "rw"
+#define AUFS_BRPERM_RO "ro"
+#define AUFS_BRPERM_RR "rr"
+#define AUFS_BRPERM_WH "wh"
+#define AUFS_BRPERM_NLWH "nolwh"
+#define AUFS_BRPERM_ROWH AUFS_BRPERM_RO "+" AUFS_BRPERM_WH
+#define AUFS_BRPERM_RRWH AUFS_BRPERM_RR "+" AUFS_BRPERM_WH
+#define AUFS_BRPERM_RWNLWH AUFS_BRPERM_RW "+" AUFS_BRPERM_NLWH
+
+/* ---------------------------------------------------------------------- */
+
+/* ioctl */
+enum {
+ /* readdir in userspace */
+ AuCtl_RDU,
+ AuCtl_RDU_INO,
+
+ /* pathconf wrapper */
+ AuCtl_WBR_FD
+};
+
+/* borrowed from linux/include/linux/kernel.h */
+#ifndef ALIGN
+#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
+#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
+#endif
+
+/* borrowed from linux/include/linux/compiler-gcc3.h */
+#ifndef __aligned
+#define __aligned(x) __attribute__((aligned(x)))
+#define __packed __attribute__((packed))
+#endif
+
+struct au_rdu_cookie {
+ __u64 h_pos;
+ __s16 bindex;
+ __u8 flags;
+ __u8 pad;
+ __u32 generation;
+} __aligned(8);
+
+struct au_rdu_ent {
+ __u64 ino;
+ __s16 bindex;
+ __u8 type;
+ __u8 nlen;
+ __u8 wh;
+ char name[0];
+} __aligned(8);
+
+static inline int au_rdu_len(int nlen)
+{
+ /* include the terminating NULL */
+ return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1,
+ sizeof(__u64));
+}
+
+union au_rdu_ent_ul {
+ struct au_rdu_ent __user *e;
+ __u64 ul;
+};
+
+enum {
+ AufsCtlRduV_SZ,
+ AufsCtlRduV_End
+};
+
+struct aufs_rdu {
+ /* input */
+ union {
+ __u64 sz; /* AuCtl_RDU */
+ __u64 nent; /* AuCtl_RDU_INO */
+ };
+ union au_rdu_ent_ul ent;
+ __u16 verify[AufsCtlRduV_End];
+
+ /* input/output */
+ __u32 blk;
+
+ /* output */
+ union au_rdu_ent_ul tail;
+ /* number of entries which were added in a single call */
+ __u64 rent;
+ __u8 full;
+ __u8 shwh;
+
+ struct au_rdu_cookie cookie;
+} __aligned(8);
+
+#define AuCtlType 'A'
+#define AUFS_CTL_RDU _IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu)
+#define AUFS_CTL_RDU_INO _IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu)
+#define AUFS_CTL_WBR_FD _IO(AuCtlType, AuCtl_WBR_FD)
+
+#endif /* __AUFS_TYPE_H__ */
diff -Nur linux-3.1.4.orig/include/linux/namei.h linux-3.1.4/include/linux/namei.h
--- linux-3.1.4.orig/include/linux/namei.h 2011-11-28 23:48:14.000000000 +0100
+++ linux-3.1.4/include/linux/namei.h 2011-12-01 12:44:17.000000000 +0100
@@ -85,6 +85,9 @@
extern struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
int (*open)(struct inode *, struct file *));
+extern struct dentry *lookup_hash(struct nameidata *nd);
+extern int __lookup_one_len(const char *name, struct qstr *this,
+ struct dentry *base, int len);
extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
extern int follow_down_one(struct path *);
diff -Nur linux-3.1.4.orig/include/linux/splice.h linux-3.1.4/include/linux/splice.h
--- linux-3.1.4.orig/include/linux/splice.h 2011-11-28 23:48:14.000000000 +0100
+++ linux-3.1.4/include/linux/splice.h 2011-12-01 12:45:51.000000000 +0100
@@ -91,4 +91,9 @@
extern void spd_release_page(struct splice_pipe_desc *, unsigned int);
extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
+extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+ loff_t *ppos, size_t len, unsigned int flags);
+extern long do_splice_to(struct file *in, loff_t *ppos,
+ struct pipe_inode_info *pipe, size_t len,
+ unsigned int flags);
#endif
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