LXR linux/fs/ocfs2/localalloc.h

   1/* -*- mode: c; c-basic-offset: 8; -*-
   2 * vim: noexpandtab sw=8 ts=8 sts=0:
   3 *
   4 * localalloc.h
   5 *
   6 * Function prototypes
   7 *
   8 * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
   9 *
  10 * This program is free software; you can redistribute it and/or
  11 * modify it under the terms of the GNU General Public
  12 * License as published by the Free Software Foundation; either
  13 * version 2 of the License, or (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 * General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public
  21 * License along with this program; if not, write to the
  22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 * Boston, MA 021110-1307, USA.
  24 */
  25
  26#ifndef OCFS2_LOCALALLOC_H
  27#define OCFS2_LOCALALLOC_H
  28
  29int ocfs2_load_local_alloc(struct ocfs2_super *osb);
  30
  31void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb);
  32
  33void ocfs2_la_set_sizes(struct ocfs2_super *osb, int requested_mb);
  34unsigned int ocfs2_la_default_mb(struct ocfs2_super *osb);
  35
  36int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
  37                                     int node_num,
  38                                     struct ocfs2_dinode **alloc_copy);
  39
  40int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
  41                                        struct ocfs2_dinode *alloc);
  42
  43int ocfs2_alloc_should_use_local(struct ocfs2_super *osb,
  44                                 u64 bits);
  45
  46struct ocfs2_alloc_context;
  47int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
  48                                   u32 bits_wanted,
  49                                   struct ocfs2_alloc_context *ac);
  50
  51int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
  52                                 handle_t *handle,
  53                                 struct ocfs2_alloc_context *ac,
  54                                 u32 bits_wanted,
  55                                 u32 *bit_off,
  56                                 u32 *num_bits);
  57
  58int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb,
  59                                handle_t *handle,
  60                                struct ocfs2_alloc_context *ac,
  61                                u32 bit_off,
  62                                u32 num_bits);
  63
  64void ocfs2_local_alloc_seen_free_bits(struct ocfs2_super *osb,
  65                                      unsigned int num_clusters);
  66void ocfs2_la_enable_worker(struct work_struct *work);
  67
  68#endif /* OCFS2_LOCALALLOC_H */
  69