/* * 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 <linux/fs.h> #include <linux/ext2_fs.h> #include <linux/locks.h> #include <linux/smp_lock.h> /* * File may be NULL when we are called. Perhaps we shouldn't * even pass file to fsync ? */ 36 int ext2_sync_file(struct file * file, struct dentry *dentry, int datasync) { struct inode *inode = dentry->d_inode; 39 return ext2_fsync_inode(inode, datasync); } 42 int ext2_fsync_inode(struct inode *inode, int datasync) { int err; 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; err |= ext2_sync_inode(inode); 53 return err ? -EIO : 0; }