fs/gfs2/super.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   4  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   5  */
   6
   7 #ifndef __SUPER_DOT_H__
   8 #define __SUPER_DOT_H__
   9
  10 #include <linux/fs.h>
  11 #include <linux/dcache.h>
  12 #include "incore.h"
  13
  14 /* Supported fs format version range */
  15 #define GFS2_FS_FORMAT_MIN (1801)
  16 #define GFS2_FS_FORMAT_MAX (1802)
  17
  18 extern void gfs2_lm_unmount(struct gfs2_sbd *sdp);
  19
  20 static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
  21 {
  22         unsigned int x;
  23         spin_lock(&sdp->sd_jindex_spin);
  24         x = sdp->sd_journals;
  25         spin_unlock(&sdp->sd_jindex_spin);
  26         return x;
  27 }
  28
  29 extern void gfs2_jindex_free(struct gfs2_sbd *sdp);
  30
  31 extern struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
  32 extern int gfs2_jdesc_check(struct gfs2_jdesc *jd);
  33 extern int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
  34                                      struct gfs2_inode **ipp);
  35
  36 extern int gfs2_make_fs_rw(struct gfs2_sbd *sdp);
  37 extern void gfs2_make_fs_ro(struct gfs2_sbd *sdp);
  38 extern void gfs2_online_uevent(struct gfs2_sbd *sdp);
  39 extern int gfs2_statfs_init(struct gfs2_sbd *sdp);
  40 extern void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
  41                                s64 dinodes);
  42 extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc,
  43                                   const void *buf);
  44 extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc,
  45                                    void *buf);
  46 extern void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh);
  47 extern int gfs2_statfs_sync(struct super_block *sb, int type);
  48 extern void gfs2_freeze_func(struct work_struct *work);
  49
  50 extern void free_local_statfs_inodes(struct gfs2_sbd *sdp);
  51 extern struct inode *find_local_statfs_inode(struct gfs2_sbd *sdp,
  52                                              unsigned int index);
  53 extern void free_sbd(struct gfs2_sbd *sdp);
  54
  55 extern struct file_system_type gfs2_fs_type;
  56 extern struct file_system_type gfs2meta_fs_type;
  57 extern const struct export_operations gfs2_export_ops;
  58 extern const struct super_operations gfs2_super_ops;
  59 extern const struct dentry_operations gfs2_dops;
  60
  61 extern const struct xattr_handler *gfs2_xattr_handlers_max[];
  62 extern const struct xattr_handler **gfs2_xattr_handlers_min;
  63
  64 #endif /* __SUPER_DOT_H__ */
  65