[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/jfs/jfs_xtree.h b/src/kernel/linux/v4.14/fs/jfs/jfs_xtree.h
new file mode 100644
index 0000000..1e09879
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/jfs/jfs_xtree.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) International Business Machines Corp., 2000-2002
+ *
+ * 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 the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef _H_JFS_XTREE
+#define _H_JFS_XTREE
+
+/*
+ * jfs_xtree.h: extent allocation descriptor B+-tree manager
+ */
+
+#include "jfs_btree.h"
+
+
+/*
+ * extent allocation descriptor (xad)
+ */
+typedef struct xad {
+ __u8 flag; /* 1: flag */
+ __u8 rsvrd[2]; /* 2: reserved */
+ __u8 off1; /* 1: offset in unit of fsblksize */
+ __le32 off2; /* 4: offset in unit of fsblksize */
+ pxd_t loc; /* 8: length and address in unit of fsblksize */
+} xad_t; /* (16) */
+
+#define MAXXLEN ((1 << 24) - 1)
+
+#define XTSLOTSIZE 16
+#define L2XTSLOTSIZE 4
+
+/* xad_t field construction */
+#define XADoffset(xad, offset64)\
+{\
+ (xad)->off1 = ((u64)offset64) >> 32;\
+ (xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\
+}
+#define XADaddress(xad, address64) PXDaddress(&(xad)->loc, address64)
+#define XADlength(xad, length32) PXDlength(&(xad)->loc, length32)
+
+/* xad_t field extraction */
+#define offsetXAD(xad)\
+ ( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2))
+#define addressXAD(xad) addressPXD(&(xad)->loc)
+#define lengthXAD(xad) lengthPXD(&(xad)->loc)
+
+/* xad list */
+struct xadlist {
+ s16 maxnxad;
+ s16 nxad;
+ xad_t *xad;
+};
+
+/* xad_t flags */
+#define XAD_NEW 0x01 /* new */
+#define XAD_EXTENDED 0x02 /* extended */
+#define XAD_COMPRESSED 0x04 /* compressed with recorded length */
+#define XAD_NOTRECORDED 0x08 /* allocated but not recorded */
+#define XAD_COW 0x10 /* copy-on-write */
+
+
+/* possible values for maxentry */
+#define XTROOTINITSLOT_DIR 6
+#define XTROOTINITSLOT 10
+#define XTROOTMAXSLOT 18
+#define XTPAGEMAXSLOT 256
+#define XTENTRYSTART 2
+
+/*
+ * xtree page:
+ */
+typedef union {
+ struct xtheader {
+ __le64 next; /* 8: */
+ __le64 prev; /* 8: */
+
+ u8 flag; /* 1: */
+ u8 rsrvd1; /* 1: */
+ __le16 nextindex; /* 2: next index = number of entries */
+ __le16 maxentry; /* 2: max number of entries */
+ __le16 rsrvd2; /* 2: */
+
+ pxd_t self; /* 8: self */
+ } header; /* (32) */
+
+ xad_t xad[XTROOTMAXSLOT]; /* 16 * maxentry: xad array */
+} xtpage_t;
+
+/*
+ * external declaration
+ */
+extern int xtLookup(struct inode *ip, s64 lstart, s64 llen,
+ int *pflag, s64 * paddr, int *plen, int flag);
+extern void xtInitRoot(tid_t tid, struct inode *ip);
+extern int xtInsert(tid_t tid, struct inode *ip,
+ int xflag, s64 xoff, int xlen, s64 * xaddrp, int flag);
+extern int xtExtend(tid_t tid, struct inode *ip, s64 xoff, int xlen,
+ int flag);
+#ifdef _NOTYET
+extern int xtTailgate(tid_t tid, struct inode *ip,
+ s64 xoff, int xlen, s64 xaddr, int flag);
+#endif
+extern int xtUpdate(tid_t tid, struct inode *ip, struct xad *nxad);
+extern int xtDelete(tid_t tid, struct inode *ip, s64 xoff, int xlen,
+ int flag);
+extern s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int type);
+extern s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size);
+extern int xtRelocate(tid_t tid, struct inode *ip,
+ xad_t * oxad, s64 nxaddr, int xtype);
+extern int xtAppend(tid_t tid,
+ struct inode *ip, int xflag, s64 xoff, int maxblocks,
+ int *xlenp, s64 * xaddrp, int flag);
+#endif /* !_H_JFS_XTREE */