projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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" | |
| 7d93a1a5 | 26 | #include <linux/buffer_head.h> /* for sync_mapping_buffers() */ |
| 1da177e4 LT |
27 | |
| 28 | ||
| 29 | /* | |
| 30 | * File may be NULL when we are called. Perhaps we shouldn't | |
| 31 | * even pass file to fsync ? | |
| 32 | */ | |
| 33 | ||
| 34 | int ext2_sync_file(struct file *file, struct dentry *dentry, int datasync) | |
| 35 | { | |
| 36 | struct inode *inode = dentry->d_inode; | |
| 37 | int err; | |
| 38 | int ret; | |
| 39 | ||
| 40 | ret = sync_mapping_buffers(inode->i_mapping); | |
| 41 | if (!(inode->i_state & I_DIRTY)) | |
| 42 | return ret; | |
| 43 | if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) | |
| 44 | return ret; | |
| 45 | ||
| 46 | err = ext2_sync_inode(inode); | |
| 47 | if (ret == 0) | |
| 48 | ret = err; | |
| 49 | return ret; | |
| 50 | } |