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
  29 int ocfs2_load_local_alloc(struct ocfs2_super *osb);
  30
  31 void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb);
  32
  33 void ocfs2_la_set_sizes(struct ocfs2_super *osb, int requested_mb);
  34 unsigned int ocfs2_la_default_mb(struct ocfs2_super *osb);
  35
  36 int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
  37                                      int node_num,
  38                                      struct ocfs2_dinode **alloc_copy);
  39
  40 int ocfs2_complete_local_alloc_recovery(struct ocfs2_super *osb,
  41                                         struct ocfs2_dinode *alloc);
  42
  43 int ocfs2_alloc_should_use_local(struct ocfs2_super *osb,
  44                                  u64 bits);
  45
  46 struct ocfs2_alloc_context;
  47 int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
  48                                    u32 bits_wanted,
  49                                    struct ocfs2_alloc_context *ac);
  50
  51 int 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
  58 int 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
  64 void ocfs2_local_alloc_seen_free_bits(struct ocfs2_super *osb,
  65                                       unsigned int num_clusters);
  66 void ocfs2_la_enable_worker(struct work_struct *work);
  67
  68 #endif /* OCFS2_LOCALALLOC_H */