1 files changed, 156 insertions, 0 deletions

diff --git a/fs/xfs/xfs_trans_extfree.c b/fs/xfs/xfs_trans_extfree.c
new file mode 100644
index 000000000000..93259a15f983
--- /dev/null
+++ b/fs/xfs/xfs_trans_extfree.c
@@ -0,0 +1,156 @@
+/*
+ * 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/
+ */
+
+#include "xfs.h"
+#include "xfs_macros.h"
+#include "xfs_types.h"
+#include "xfs_inum.h"
+#include "xfs_log.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_dir.h"
+#include "xfs_dmapi.h"
+#include "xfs_mount.h"
+#include "xfs_trans_priv.h"
+#include "xfs_extfree_item.h"
+
+/*
+ * This routine is called to allocate an "extent free intention"
+ * log item that will hold nextents worth of extents.  The
+ * caller must use all nextents extents, because we are not
+ * flexible about this at all.
+ */
+xfs_efi_log_item_t *
+xfs_trans_get_efi(xfs_trans_t   *tp,
+                  uint          nextents)
+{
+        xfs_efi_log_item_t      *efip;
+
+        ASSERT(tp != NULL);
+        ASSERT(nextents > 0);
+
+        efip = xfs_efi_init(tp->t_mountp, nextents);
+        ASSERT(efip != NULL);
+
+        /*
+         * Get a log_item_desc to point at the new item.
+         */
+        (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip);
+
+        return (efip);
+}
+
+/*
+ * This routine is called to indicate that the described
+ * extent is to be logged as needing to be freed.  It should
+ * be called once for each extent to be freed.
+ */
+void
+xfs_trans_log_efi_extent(xfs_trans_t            *tp,
+                         xfs_efi_log_item_t     *efip,
+                         xfs_fsblock_t          start_block,
+                         xfs_extlen_t           ext_len)
+{
+        xfs_log_item_desc_t     *lidp;
+        uint                    next_extent;
+        xfs_extent_t            *extp;
+
+        lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip);
+        ASSERT(lidp != NULL);
+
+        tp->t_flags |= XFS_TRANS_DIRTY;
+        lidp->lid_flags |= XFS_LID_DIRTY;
+
+        next_extent = efip->efi_next_extent;
+        ASSERT(next_extent < efip->efi_format.efi_nextents);
+        extp = &(efip->efi_format.efi_extents[next_extent]);
+        extp->ext_start = start_block;
+        extp->ext_len = ext_len;
+        efip->efi_next_extent++;
+}
+
+
+/*
+ * This routine is called to allocate an "extent free done"
+ * log item that will hold nextents worth of extents.  The
+ * caller must use all nextents extents, because we are not
+ * flexible about this at all.
+ */
+xfs_efd_log_item_t *
+xfs_trans_get_efd(xfs_trans_t           *tp,
+                  xfs_efi_log_item_t    *efip,
+                  uint                  nextents)
+{
+        xfs_efd_log_item_t      *efdp;
+
+        ASSERT(tp != NULL);
+        ASSERT(nextents > 0);
+
+        efdp = xfs_efd_init(tp->t_mountp, efip, nextents);
+        ASSERT(efdp != NULL);
+
+        /*
+         * Get a log_item_desc to point at the new item.
+         */
+        (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);
+
+        return (efdp);
+}
+
+/*
+ * This routine is called to indicate that the described
+ * extent is to be logged as having been freed.  It should
+ * be called once for each extent freed.
+ */
+void
+xfs_trans_log_efd_extent(xfs_trans_t            *tp,
+                         xfs_efd_log_item_t     *efdp,
+                         xfs_fsblock_t          start_block,
+                         xfs_extlen_t           ext_len)
+{
+        xfs_log_item_desc_t     *lidp;
+        uint                    next_extent;
+        xfs_extent_t            *extp;
+
+        lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp);
+        ASSERT(lidp != NULL);
+
+        tp->t_flags |= XFS_TRANS_DIRTY;
+        lidp->lid_flags |= XFS_LID_DIRTY;
+
+        next_extent = efdp->efd_next_extent;
+        ASSERT(next_extent < efdp->efd_format.efd_nextents);
+        extp = &(efdp->efd_format.efd_extents[next_extent]);
+        extp->ext_start = start_block;
+        extp->ext_len = ext_len;
+        efdp->efd_next_extent++;
+}