52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
|
|
* linux/fs/ext2/fsync.c
|
|
*
|
|
* Copyright (C) 1993 Stephen Tweedie (sct@dcs.ed.ac.uk)
|
|
* from
|
|
* Copyright (C) 1992 Remy Card (card@masi.ibp.fr)
|
|
* Laboratoire MASI - Institut Blaise Pascal
|
|
* Universite Pierre et Marie Curie (Paris VI)
|
|
* from
|
|
* linux/fs/minix/truncate.c Copyright (C) 1991, 1992 Linus Torvalds
|
|
*
|
|
* ext2fs fsync primitive
|
|
*
|
|
* Big-endian to little-endian byte-swapping/bitmaps by
|
|
* David S. Miller (davem@caip.rutgers.edu), 1995
|
|
*
|
|
* Removed unnecessary code duplication for little endian machines
|
|
* and excessive __inline__s.
|
|
* Andi Kleen, 1997
|
|
*
|
|
* Major simplications and cleanup - we only need to do the metadata, because
|
|
* we can depend on generic_block_fdatasync() to sync the data blocks.
|
|
*/
|
|
|
|
#include "ext2.h"
|
|
#include <linux/smp_lock.h>
|
|
#include <linux/buffer_head.h> /* for sync_mapping_buffers() */
|
|
|
|
|
|
/*
|
|
* File may be NULL when we are called. Perhaps we shouldn't
|
|
* even pass file to fsync ?
|
|
*/
|
|
|
|
int ext2_sync_file(struct file *file, struct dentry *dentry, int datasync)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int err;
|
|
int ret;
|
|
|
|
ret = sync_mapping_buffers(inode->i_mapping);
|
|
if (!(inode->i_state & I_DIRTY))
|
|
return ret;
|
|
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
|
|
return ret;
|
|
|
|
err = ext2_sync_inode(inode);
|
|
if (ret == 0)
|
|
ret = err;
|
|
return ret;
|
|
}
|