Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / xfs / xfs_buf_item.h

diff --git a/kernel/fs/xfs/xfs_buf_item.h b/kernel/fs/xfs/xfs_buf_item.h
new file mode 100644 (file)
index 0000000..3f3455a
--- /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__ */