fs/xfs/xfs_icreate_item.h

   1 /*
   2  * Copyright (c) 2008-2010, Dave Chinner
   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 #ifndef XFS_ICREATE_ITEM_H
  19 #define XFS_ICREATE_ITEM_H      1
  20
  21 /*
  22  * on disk log item structure
  23  *
  24  * Log recovery assumes the first two entries are the type and size and they fit
  25  * in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
  26  * decoding can be done correctly.
  27  */
  28 struct xfs_icreate_log {
  29         __uint16_t      icl_type;       /* type of log format structure */
  30         __uint16_t      icl_size;       /* size of log format structure */
  31         __be32          icl_ag;         /* ag being allocated in */
  32         __be32          icl_agbno;      /* start block of inode range */
  33         __be32          icl_count;      /* number of inodes to initialise */
  34         __be32          icl_isize;      /* size of inodes */
  35         __be32          icl_length;     /* length of extent to initialise */
  36         __be32          icl_gen;        /* inode generation number to use */
  37 };
  38
  39 /* in memory log item structure */
  40 struct xfs_icreate_item {
  41         struct xfs_log_item     ic_item;
  42         struct xfs_icreate_log  ic_format;
  43 };
  44
  45 extern kmem_zone_t *xfs_icreate_zone;   /* inode create item zone */
  46
  47 void xfs_icreate_log(struct xfs_trans *tp, xfs_agnumber_t agno,
  48                         xfs_agblock_t agbno, unsigned int count,
  49                         unsigned int inode_size, xfs_agblock_t length,
  50                         unsigned int generation);
  51
  52 #endif  /* XFS_ICREATE_ITEM_H */