Commit | Line | Data |
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1da177e4 LT |
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 "ext2.h" | |
26 | #include <linux/smp_lock.h> | |
27 | #include <linux/buffer_head.h> /* for fsync_inode_buffers() */ | |
28 | ||
29 | ||
30 | /* | |
31 | * File may be NULL when we are called. Perhaps we shouldn't | |
32 | * even pass file to fsync ? | |
33 | */ | |
34 | ||
35 | int ext2_sync_file(struct file *file, struct dentry *dentry, int datasync) | |
36 | { | |
37 | struct inode *inode = dentry->d_inode; | |
38 | int err; | |
39 | int ret; | |
40 | ||
41 | ret = sync_mapping_buffers(inode->i_mapping); | |
42 | if (!(inode->i_state & I_DIRTY)) | |
43 | return ret; | |
44 | if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) | |
45 | return ret; | |
46 | ||
47 | err = ext2_sync_inode(inode); | |
48 | if (ret == 0) | |
49 | ret = err; | |
50 | return ret; | |
51 | } |