Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/kernel/fs/xfs/xfs_buf_item.h b/kernel/fs/xfs/xfs_buf_item.h
new file mode 100644
index 000000000..3f3455a41
--- /dev/null
+++ b/kernel/fs/xfs/xfs_buf_item.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it would 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 the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#ifndef	__XFS_BUF_ITEM_H__
+#define	__XFS_BUF_ITEM_H__
+
+/* kernel only definitions */
+
+/* buf log item flags */
+#define	XFS_BLI_HOLD		0x01
+#define	XFS_BLI_DIRTY		0x02
+#define	XFS_BLI_STALE		0x04
+#define	XFS_BLI_LOGGED		0x08
+#define	XFS_BLI_INODE_ALLOC_BUF	0x10
+#define XFS_BLI_STALE_INODE	0x20
+#define	XFS_BLI_INODE_BUF	0x40
+#define	XFS_BLI_ORDERED		0x80
+
+#define XFS_BLI_FLAGS \
+	{ XFS_BLI_HOLD,		"HOLD" }, \
+	{ XFS_BLI_DIRTY,	"DIRTY" }, \
+	{ XFS_BLI_STALE,	"STALE" }, \
+	{ XFS_BLI_LOGGED,	"LOGGED" }, \
+	{ XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
+	{ XFS_BLI_STALE_INODE,	"STALE_INODE" }, \
+	{ XFS_BLI_INODE_BUF,	"INODE_BUF" }, \
+	{ XFS_BLI_ORDERED,	"ORDERED" }
+
+
+struct xfs_buf;
+struct xfs_mount;
+struct xfs_buf_log_item;
+
+/*
+ * This is the in core log item structure used to track information
+ * needed to log buffers.  It tracks how many times the lock has been
+ * locked, and which 128 byte chunks of the buffer are dirty.
+ */
+typedef struct xfs_buf_log_item {
+	xfs_log_item_t		bli_item;	/* common item structure */
+	struct xfs_buf		*bli_buf;	/* real buffer pointer */
+	unsigned int		bli_flags;	/* misc flags */
+	unsigned int		bli_recur;	/* lock recursion count */
+	atomic_t		bli_refcount;	/* cnt of tp refs */
+	int			bli_format_count;	/* count of headers */
+	struct xfs_buf_log_format *bli_formats;	/* array of in-log header ptrs */
+	struct xfs_buf_log_format __bli_format;	/* embedded in-log header */
+} xfs_buf_log_item_t;
+
+void	xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
+void	xfs_buf_item_relse(struct xfs_buf *);
+void	xfs_buf_item_log(xfs_buf_log_item_t *, uint, uint);
+uint	xfs_buf_item_dirty(xfs_buf_log_item_t *);
+void	xfs_buf_attach_iodone(struct xfs_buf *,
+			      void(*)(struct xfs_buf *, xfs_log_item_t *),
+			      xfs_log_item_t *);
+void	xfs_buf_iodone_callbacks(struct xfs_buf *);
+void	xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *);
+
+extern kmem_zone_t	*xfs_buf_item_zone;
+
+#endif	/* __XFS_BUF_ITEM_H__ */