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/buffer_head.h> /* for sync_mapping_buffers() */ 27 28 29 /* 30 * File may be NULL when we are called. Perhaps we shouldn't 31 * even pass file to fsync ? 32 */ 33 ext2_sync_file(struct file * file,struct dentry * dentry,int datasync)34int 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 } 51