return 0; 
wbc.nr_to_write = 0; 
int write_inode_now(struct inode *inode, int sync){	int ret;	struct writeback_control wbc = {		.nr_to_write = LONG_MAX,		.sync_mode = WB_SYNC_ALL,	};	if (!mapping_cap_writeback_dirty(inode->i_mapping))		return 0;	might_sleep();	spin_lock(&inode_lock);	ret = __writeback_single_inode(inode, &wbc);	spin_unlock(&inode_lock);	if (sync)		wait_on_inode(inode);	return ret;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/49364ce2534418462d681ad99e52e79a00b0f40b/fs-writeback.c/buggy/fs/fs-writeback.c