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, 184 insertions, 0 deletions

diff --git a/fs/xfs/xfs_ialloc.h b/fs/xfs/xfs_ialloc.h
new file mode 100644
index 000000000000..db6d0015cecf
--- /dev/null
+++ b/fs/xfs/xfs_ialloc.h
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2000 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_IALLOC_H__
+#define __XFS_IALLOC_H__
+
+struct xfs_buf;
+struct xfs_dinode;
+struct xfs_mount;
+struct xfs_trans;
+
+/*
+ * Allocation parameters for inode allocation.
+ */
+#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_INODES)
+int xfs_ialloc_inodes(struct xfs_mount *mp);
+#define XFS_IALLOC_INODES(mp)   xfs_ialloc_inodes(mp)
+#else
+#define XFS_IALLOC_INODES(mp)   ((mp)->m_ialloc_inos)
+#endif
+#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_BLOCKS)
+xfs_extlen_t xfs_ialloc_blocks(struct xfs_mount *mp);
+#define XFS_IALLOC_BLOCKS(mp)   xfs_ialloc_blocks(mp)
+#else
+#define XFS_IALLOC_BLOCKS(mp)   ((mp)->m_ialloc_blks)
+#endif
+
+/*
+ * For small block file systems, move inodes in clusters of this size.
+ * When we don't have a lot of memory, however, we go a bit smaller
+ * to reduce the number of AGI and ialloc btree blocks we need to keep
+ * around for xfs_dilocate().  We choose which one to use in
+ * xfs_mount_int().
+ */
+#define XFS_INODE_BIG_CLUSTER_SIZE      8192
+#define XFS_INODE_SMALL_CLUSTER_SIZE    4096
+#define XFS_INODE_CLUSTER_SIZE(mp)      (mp)->m_inode_cluster_size
+
+/*
+ * Make an inode pointer out of the buffer/offset.
+ */
+#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MAKE_IPTR)
+struct xfs_dinode *xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o);
+#define XFS_MAKE_IPTR(mp,b,o)           xfs_make_iptr(mp,b,o)
+#else
+#define XFS_MAKE_IPTR(mp,b,o) \
+        ((xfs_dinode_t *)(xfs_buf_offset(b, (o) << (mp)->m_sb.sb_inodelog)))
+#endif
+
+/*
+ * Find a free (set) bit in the inode bitmask.
+ */
+#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IALLOC_FIND_FREE)
+int xfs_ialloc_find_free(xfs_inofree_t *fp);
+#define XFS_IALLOC_FIND_FREE(fp)        xfs_ialloc_find_free(fp)
+#else
+#define XFS_IALLOC_FIND_FREE(fp)        xfs_lowbit64(*(fp))
+#endif
+
+
+#ifdef __KERNEL__
+
+/*
+ * Prototypes for visible xfs_ialloc.c routines.
+ */
+
+/*
+ * Allocate an inode on disk.
+ * Mode is used to tell whether the new inode will need space, and whether
+ * it is a directory.
+ *
+ * To work within the constraint of one allocation per transaction,
+ * xfs_dialloc() is designed to be called twice if it has to do an
+ * allocation to make more free inodes.  If an inode is
+ * available without an allocation, agbp would be set to the current
+ * agbp and alloc_done set to false.
+ * If an allocation needed to be done, agbp would be set to the
+ * inode header of the allocation group and alloc_done set to true.
+ * The caller should then commit the current transaction and allocate a new
+ * transaction.  xfs_dialloc() should then be called again with
+ * the agbp value returned from the previous call.
+ *
+ * Once we successfully pick an inode its number is returned and the
+ * on-disk data structures are updated.  The inode itself is not read
+ * in, since doing so would break ordering constraints with xfs_reclaim.
+ *
+ * *agbp should be set to NULL on the first call, *alloc_done set to FALSE.
+ */
+int                                     /* error */
+xfs_dialloc(
+        struct xfs_trans *tp,           /* transaction pointer */
+        xfs_ino_t       parent,         /* parent inode (directory) */
+        mode_t          mode,           /* mode bits for new inode */
+        int             okalloc,        /* ok to allocate more space */
+        struct xfs_buf  **agbp,         /* buf for a.g. inode header */
+        boolean_t       *alloc_done,    /* an allocation was done to replenish
+                                           the free inodes */
+        xfs_ino_t       *inop);         /* inode number allocated */
+
+/*
+ * Free disk inode.  Carefully avoids touching the incore inode, all
+ * manipulations incore are the caller's responsibility.
+ * The on-disk inode is not changed by this operation, only the
+ * btree (free inode mask) is changed.
+ */
+int                                     /* error */
+xfs_difree(
+        struct xfs_trans *tp,           /* transaction pointer */
+        xfs_ino_t       inode,          /* inode to be freed */
+        struct xfs_bmap_free *flist,    /* extents to free */
+        int             *delete,        /* set if inode cluster was deleted */
+        xfs_ino_t       *first_ino);    /* first inode in deleted cluster */
+
+/*
+ * Return the location of the inode in bno/len/off,
+ * for mapping it into a buffer.
+ */
+int
+xfs_dilocate(
+        struct xfs_mount *mp,           /* file system mount structure */
+        struct xfs_trans *tp,           /* transaction pointer */
+        xfs_ino_t       ino,            /* inode to locate */
+        xfs_fsblock_t   *bno,           /* output: block containing inode */
+        int             *len,           /* output: num blocks in cluster*/
+        int             *off,           /* output: index in block of inode */
+        uint            flags);         /* flags for inode btree lookup */
+
+/*
+ * Compute and fill in value of m_in_maxlevels.
+ */
+void
+xfs_ialloc_compute_maxlevels(
+        struct xfs_mount *mp);          /* file system mount structure */
+
+/*
+ * Log specified fields for the ag hdr (inode section)
+ */
+void
+xfs_ialloc_log_agi(
+        struct xfs_trans *tp,           /* transaction pointer */
+        struct xfs_buf  *bp,            /* allocation group header buffer */
+        int             fields);        /* bitmask of fields to log */
+
+/*
+ * Read in the allocation group header (inode allocation section)
+ */
+int                                     /* error */
+xfs_ialloc_read_agi(
+        struct xfs_mount *mp,           /* file system mount structure */
+        struct xfs_trans *tp,           /* transaction pointer */
+        xfs_agnumber_t  agno,           /* allocation group number */
+        struct xfs_buf  **bpp);         /* allocation group hdr buf */
+
+#endif  /* __KERNEL__ */
+
+#endif  /* __XFS_IALLOC_H__ */