fs/xfs/xfs_rtalloc.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6 #ifndef __XFS_RTALLOC_H__
   7 #define __XFS_RTALLOC_H__
   8
   9 /* kernel only definitions and functions */
  10
  11 struct xfs_mount;
  12 struct xfs_trans;
  13
  14 #ifdef CONFIG_XFS_RT
  15 /* rtgroup superblock initialization */
  16 int xfs_rtmount_readsb(struct xfs_mount *mp);
  17 void xfs_rtmount_freesb(struct xfs_mount *mp);
  18
  19 /*
  20  * Initialize realtime fields in the mount structure.
  21  */
  22 int                                     /* error */
  23 xfs_rtmount_init(
  24         struct xfs_mount        *mp);   /* file system mount structure */
  25 void
  26 xfs_rtunmount_inodes(
  27         struct xfs_mount        *mp);
  28
  29 /*
  30  * Get the bitmap and summary inodes into the mount structure
  31  * at mount time.
  32  */
  33 int                                     /* error */
  34 xfs_rtmount_inodes(
  35         struct xfs_mount        *mp);   /* file system mount structure */
  36
  37 /*
  38  * Grow the realtime area of the filesystem.
  39  */
  40 int
  41 xfs_growfs_rt(
  42         struct xfs_mount        *mp,    /* file system mount structure */
  43         xfs_growfs_rt_t         *in);   /* user supplied growfs struct */
  44
  45 int xfs_rtalloc_reinit_frextents(struct xfs_mount *mp);
  46 #else
  47 # define xfs_growfs_rt(mp,in)                           (-ENOSYS)
  48 # define xfs_rtalloc_reinit_frextents(m)                (0)
  49 # define xfs_rtmount_readsb(mp)                         (0)
  50 # define xfs_rtmount_freesb(mp)                         ((void)0)
  51 static inline int               /* error */
  52 xfs_rtmount_init(
  53         xfs_mount_t     *mp)    /* file system mount structure */
  54 {
  55         if (mp->m_sb.sb_rblocks == 0)
  56                 return 0;
  57
  58         xfs_warn(mp, "Not built with CONFIG_XFS_RT");
  59         return -ENOSYS;
  60 }
  61 # define xfs_rtmount_inodes(m)  (((mp)->m_sb.sb_rblocks == 0)? 0 : (-ENOSYS))
  62 # define xfs_rtunmount_inodes(m)
  63 #endif  /* CONFIG_XFS_RT */
  64
  65 #endif  /* __XFS_RTALLOC_H__ */