fs/udf/fsync.c

   1 /*
   2  * fsync.c
   3  *
   4  * PURPOSE
   5  *  Fsync handling routines for the OSTA-UDF(tm) filesystem.
   6  *
   7  * CONTACTS
   8  *  E-mail regarding any portion of the Linux UDF file system should be
   9  *  directed to the development team mailing list (run by majordomo):
  10  *      linux_udf@hpesjro.fc.hp.com
  11  *
  12  * COPYRIGHT
  13  *  This file is distributed under the terms of the GNU General Public
  14  *  License (GPL). Copies of the GPL can be obtained from:
  15  *      ftp://prep.ai.mit.edu/pub/gnu/GPL
  16  *  Each contributing author retains all rights to their own work.
  17  *
  18  *  (C) 1999-2001 Ben Fennema
  19  *  (C) 1999-2000 Stelias Computing Inc
  20  *
  21  * HISTORY
  22  *
  23  *  05/22/99 blf  Created.
  24  */
  25
  26 #include "udfdecl.h"
  27
  28 #include <linux/fs.h>
  29 #include <linux/smp_lock.h>
  30
  31 static int udf_fsync_inode(struct inode *, int);
  32
  33 /*
  34  *      File may be NULL when we are called. Perhaps we shouldn't
  35  *      even pass file to fsync ?
  36  */
  37
  38 int udf_fsync_file(struct file * file, struct dentry *dentry, int datasync)
  39 {
  40         struct inode *inode = dentry->d_inode;
  41         return udf_fsync_inode(inode, datasync);
  42 }
  43
  44 static int udf_fsync_inode(struct inode *inode, int datasync)
  45 {
  46         int err;
  47
  48         err = sync_mapping_buffers(inode->i_mapping);
  49         if (!(inode->i_state & I_DIRTY))
  50                 return err;
  51         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
  52                 return err;
  53
  54         err |= udf_sync_inode (inode);
  55         return err ? -EIO : 0;
  56 }