Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 203 insertions, 0 deletions

diff --git a/fs/xfs/xfs_alloc.h b/fs/xfs/xfs_alloc.h
new file mode 100644
index 000000000000..72329c86351c
--- /dev/null
+++ b/fs/xfs/xfs_alloc.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA  94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+#ifndef __XFS_ALLOC_H__
+#define __XFS_ALLOC_H__
+
+struct xfs_buf;
+struct xfs_mount;
+struct xfs_perag;
+struct xfs_trans;
+
+/*
+ * Freespace allocation types.  Argument to xfs_alloc_[v]extent.
+ */
+typedef enum xfs_alloctype
+{
+        XFS_ALLOCTYPE_ANY_AG,           /* allocate anywhere, use rotor */
+        XFS_ALLOCTYPE_FIRST_AG,         /* ... start at ag 0 */
+        XFS_ALLOCTYPE_START_AG,         /* anywhere, start in this a.g. */
+        XFS_ALLOCTYPE_THIS_AG,          /* anywhere in this a.g. */
+        XFS_ALLOCTYPE_START_BNO,        /* near this block else anywhere */
+        XFS_ALLOCTYPE_NEAR_BNO,         /* in this a.g. and near this block */
+        XFS_ALLOCTYPE_THIS_BNO          /* at exactly this block */
+} xfs_alloctype_t;
+
+/*
+ * Flags for xfs_alloc_fix_freelist.
+ */
+#define XFS_ALLOC_FLAG_TRYLOCK  0x00000001  /* use trylock for buffer locking */
+
+/*
+ * Argument structure for xfs_alloc routines.
+ * This is turned into a structure to avoid having 20 arguments passed
+ * down several levels of the stack.
+ */
+typedef struct xfs_alloc_arg {
+        struct xfs_trans *tp;           /* transaction pointer */
+        struct xfs_mount *mp;           /* file system mount point */
+        struct xfs_buf  *agbp;          /* buffer for a.g. freelist header */
+        struct xfs_perag *pag;          /* per-ag struct for this agno */
+        xfs_fsblock_t   fsbno;          /* file system block number */
+        xfs_agnumber_t  agno;           /* allocation group number */
+        xfs_agblock_t   agbno;          /* allocation group-relative block # */
+        xfs_extlen_t    minlen;         /* minimum size of extent */
+        xfs_extlen_t    maxlen;         /* maximum size of extent */
+        xfs_extlen_t    mod;            /* mod value for extent size */
+        xfs_extlen_t    prod;           /* prod value for extent size */
+        xfs_extlen_t    minleft;        /* min blocks must be left after us */
+        xfs_extlen_t    total;          /* total blocks needed in xaction */
+        xfs_extlen_t    alignment;      /* align answer to multiple of this */
+        xfs_extlen_t    minalignslop;   /* slop for minlen+alignment calcs */
+        xfs_extlen_t    len;            /* output: actual size of extent */
+        xfs_alloctype_t type;           /* allocation type XFS_ALLOCTYPE_... */
+        xfs_alloctype_t otype;          /* original allocation type */
+        char            wasdel;         /* set if allocation was prev delayed */
+        char            wasfromfl;      /* set if allocation is from freelist */
+        char            isfl;           /* set if is freelist blocks - !actg */
+        char            userdata;       /* set if this is user data */
+} xfs_alloc_arg_t;
+
+/*
+ * Defines for userdata
+ */
+#define XFS_ALLOC_USERDATA              1       /* allocation is for user data*/
+#define XFS_ALLOC_INITIAL_USER_DATA     2       /* special case start of file */
+
+
+#ifdef __KERNEL__
+
+#if defined(XFS_ALLOC_TRACE)
+/*
+ * Allocation tracing buffer size.
+ */
+#define XFS_ALLOC_TRACE_SIZE    4096
+extern ktrace_t *xfs_alloc_trace_buf;
+
+/*
+ * Types for alloc tracing.
+ */
+#define XFS_ALLOC_KTRACE_ALLOC  1
+#define XFS_ALLOC_KTRACE_FREE   2
+#define XFS_ALLOC_KTRACE_MODAGF 3
+#define XFS_ALLOC_KTRACE_BUSY   4
+#define XFS_ALLOC_KTRACE_UNBUSY 5
+#define XFS_ALLOC_KTRACE_BUSYSEARCH     6
+#endif
+
+/*
+ * Compute and fill in value of m_ag_maxlevels.
+ */
+void
+xfs_alloc_compute_maxlevels(
+        struct xfs_mount        *mp);   /* file system mount structure */
+
+/*
+ * Get a block from the freelist.
+ * Returns with the buffer for the block gotten.
+ */
+int                             /* error */
+xfs_alloc_get_freelist(
+        struct xfs_trans *tp,   /* transaction pointer */
+        struct xfs_buf  *agbp,  /* buffer containing the agf structure */
+        xfs_agblock_t   *bnop); /* block address retrieved from freelist */
+
+/*
+ * Log the given fields from the agf structure.
+ */
+void
+xfs_alloc_log_agf(
+        struct xfs_trans *tp,   /* transaction pointer */
+        struct xfs_buf  *bp,    /* buffer for a.g. freelist header */
+        int             fields);/* mask of fields to be logged (XFS_AGF_...) */
+
+/*
+ * Interface for inode allocation to force the pag data to be initialized.
+ */
+int                             /* error */
+xfs_alloc_pagf_init(
+        struct xfs_mount *mp,   /* file system mount structure */
+        struct xfs_trans *tp,   /* transaction pointer */
+        xfs_agnumber_t  agno,   /* allocation group number */
+        int             flags); /* XFS_ALLOC_FLAGS_... */
+
+/*
+ * Put the block on the freelist for the allocation group.
+ */
+int                             /* error */
+xfs_alloc_put_freelist(
+        struct xfs_trans *tp,   /* transaction pointer */
+        struct xfs_buf  *agbp,  /* buffer for a.g. freelist header */
+        struct xfs_buf  *agflbp,/* buffer for a.g. free block array */
+        xfs_agblock_t   bno);   /* block being freed */
+
+/*
+ * Read in the allocation group header (free/alloc section).
+ */
+int                                     /* error  */
+xfs_alloc_read_agf(
+        struct xfs_mount *mp,           /* mount point structure */
+        struct xfs_trans *tp,           /* transaction pointer */
+        xfs_agnumber_t  agno,           /* allocation group number */
+        int             flags,          /* XFS_ALLOC_FLAG_... */
+        struct xfs_buf  **bpp);         /* buffer for the ag freelist header */
+
+/*
+ * Allocate an extent (variable-size).
+ */
+int                             /* error */
+xfs_alloc_vextent(
+        xfs_alloc_arg_t *args); /* allocation argument structure */
+
+/*
+ * Free an extent.
+ */
+int                             /* error */
+xfs_free_extent(
+        struct xfs_trans *tp,   /* transaction pointer */
+        xfs_fsblock_t   bno,    /* starting block number of extent */
+        xfs_extlen_t    len);   /* length of extent */
+
+void
+xfs_alloc_mark_busy(xfs_trans_t *tp,
+                xfs_agnumber_t agno,
+                xfs_agblock_t bno,
+                xfs_extlen_t len);
+
+void
+xfs_alloc_clear_busy(xfs_trans_t *tp,
+                xfs_agnumber_t ag,
+                int idx);
+
+
+#endif  /* __KERNEL__ */
+
+#endif  /* __XFS_ALLOC_H__ */