1 /*
2 * linux/fs/ext2/fsync.c
3 *
4 * Copyright (C) 1993 Stephen Tweedie (sct@dcs.ed.ac.uk)
5 * from
6 * Copyright (C) 1992 Remy Card (card@masi.ibp.fr)
7 * Laboratoire MASI - Institut Blaise Pascal
8 * Universite Pierre et Marie Curie (Paris VI)
9 * from
10 * linux/fs/minix/truncate.c Copyright (C) 1991, 1992 Linus Torvalds
11 *
12 * ext2fs fsync primitive
13 *
14 * Big-endian to little-endian byte-swapping/bitmaps by
15 * David S. Miller (davem@caip.rutgers.edu), 1995
16 *
17 * Removed unnecessary code duplication for little endian machines
18 * and excessive __inline__s.
19 * Andi Kleen, 1997
20 *
21 * Major simplications and cleanup - we only need to do the metadata, because
22 * we can depend on generic_block_fdatasync() to sync the data blocks.
23 */
24
25 #include <linux/fs.h>
26 #include <linux/ext2_fs.h>
27 #include <linux/locks.h>
28 #include <linux/smp_lock.h>
29
30
31 /*
32 * File may be NULL when we are called. Perhaps we shouldn't
33 * even pass file to fsync ?
34 */
35
36 int ext2_sync_file(struct file * file, struct dentry *dentry, int datasync)
37 {
38 struct inode *inode = dentry->d_inode;
39 return ext2_fsync_inode(inode, datasync);
40 }
41
42 int ext2_fsync_inode(struct inode *inode, int datasync)
43 {
44 int err;
45
46 err = fsync_inode_buffers(inode);
47 if (!(inode->i_state & I_DIRTY))
48 return err;
49 if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
50 return err;
51
52 err |= ext2_sync_inode(inode);
53 return err ? -EIO : 0;
54 }
55
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