git.oblomov.eu Git - linux-2.6/blob - fs/xfs/xfs_iocore.c

   1 /*
   2  * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18 #include "xfs.h"
  19 #include "xfs_fs.h"
  20 #include "xfs_types.h"
  21 #include "xfs_bit.h"
  22 #include "xfs_log.h"
  23 #include "xfs_inum.h"
  24 #include "xfs_trans.h"
  25 #include "xfs_sb.h"
  26 #include "xfs_ag.h"
  27 #include "xfs_dir.h"
  28 #include "xfs_dir2.h"
  29 #include "xfs_dmapi.h"
  30 #include "xfs_mount.h"
  31 #include "xfs_bmap_btree.h"
  32 #include "xfs_alloc_btree.h"
  33 #include "xfs_ialloc_btree.h"
  34 #include "xfs_dir_sf.h"
  35 #include "xfs_dir2_sf.h"
  36 #include "xfs_attr_sf.h"
  37 #include "xfs_dinode.h"
  38 #include "xfs_inode.h"
  39 #include "xfs_inode_item.h"
  40 #include "xfs_itable.h"
  41 #include "xfs_btree.h"
  42 #include "xfs_alloc.h"
  43 #include "xfs_ialloc.h"
  44 #include "xfs_bmap.h"
  45 #include "xfs_error.h"
  46 #include "xfs_rw.h"
  47 #include "xfs_quota.h"
  48 #include "xfs_trans_space.h"
  49 #include "xfs_iomap.h"
  50
  51
  52 STATIC xfs_fsize_t
  53 xfs_size_fn(
  54         xfs_inode_t             *ip)
  55 {
  56         return (ip->i_d.di_size);
  57 }
  58
  59 STATIC int
  60 xfs_ioinit(
  61         struct vfs              *vfsp,
  62         struct xfs_mount_args   *mntargs,
  63         int                     flags)
  64 {
  65         return xfs_mountfs(vfsp, XFS_VFSTOM(vfsp), flags);
  66 }
  67
  68 xfs_ioops_t     xfs_iocore_xfs = {
  69         .xfs_ioinit             = (xfs_ioinit_t) xfs_ioinit,
  70         .xfs_bmapi_func         = (xfs_bmapi_t) xfs_bmapi,
  71         .xfs_bmap_eof_func      = (xfs_bmap_eof_t) xfs_bmap_eof,
  72         .xfs_iomap_write_direct =
  73                         (xfs_iomap_write_direct_t) xfs_iomap_write_direct,
  74         .xfs_iomap_write_delay =
  75                         (xfs_iomap_write_delay_t) xfs_iomap_write_delay,
  76         .xfs_iomap_write_allocate =
  77                         (xfs_iomap_write_allocate_t) xfs_iomap_write_allocate,
  78         .xfs_iomap_write_unwritten =
  79                         (xfs_iomap_write_unwritten_t) xfs_iomap_write_unwritten,
  80         .xfs_ilock              = (xfs_lock_t) xfs_ilock,
  81         .xfs_lck_map_shared     = (xfs_lck_map_shared_t) xfs_ilock_map_shared,
  82         .xfs_ilock_demote       = (xfs_lock_demote_t) xfs_ilock_demote,
  83         .xfs_ilock_nowait       = (xfs_lock_nowait_t) xfs_ilock_nowait,
  84         .xfs_unlock             = (xfs_unlk_t) xfs_iunlock,
  85         .xfs_size_func          = (xfs_size_t) xfs_size_fn,
  86         .xfs_iodone             = (xfs_iodone_t) fs_noerr,
  87 };
  88
  89 void
  90 xfs_iocore_inode_reinit(
  91         xfs_inode_t     *ip)
  92 {
  93         xfs_iocore_t    *io = &ip->i_iocore;
  94
  95         io->io_flags = 0;
  96         if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
  97                 io->io_flags |= XFS_IOCORE_RT;
  98         io->io_dmevmask = ip->i_d.di_dmevmask;
  99         io->io_dmstate = ip->i_d.di_dmstate;
 100 }
 101
 102 void
 103 xfs_iocore_inode_init(
 104         xfs_inode_t     *ip)
 105 {
 106         xfs_iocore_t    *io = &ip->i_iocore;
 107         xfs_mount_t     *mp = ip->i_mount;
 108
 109         io->io_mount = mp;
 110 #ifdef DEBUG
 111         io->io_lock = &ip->i_lock;
 112         io->io_iolock = &ip->i_iolock;
 113 #endif
 114
 115         io->io_obj = (void *)ip;
 116
 117         xfs_iocore_inode_reinit(ip);
 118 }