fs/udf/fsync.c

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