if (block < 0 || block > info->si_blocks) 
if (block > info->si_blocks) 
static int bfs_get_block(struct inode * inode, sector_t block, 	struct buffer_head * bh_result, int create){	long phys;	int err;	struct super_block *sb = inode->i_sb;	struct bfs_sb_info *info = BFS_SB(sb);	struct bfs_inode_info *bi = BFS_I(inode);	struct buffer_head *sbh = info->si_sbh;	if (block < 0 || block > info->si_blocks)		return -EIO;	phys = bi->i_sblock + block;	if (!create) {		if (phys <= bi->i_eblock) {			dprintf("c=%d, b=%08lx, phys=%08lx (granted)\n", create, block, phys);			map_bh(bh_result, sb, phys);		}		return 0;	}	/* if the file is not empty and the requested block is within the range	   of blocks allocated for this file, we can grant it */	if (inode->i_size && phys <= bi->i_eblock) {		dprintf("c=%d, b=%08lx, phys=%08lx (interim block granted)\n", 				create, block, phys);		map_bh(bh_result, sb, phys);		return 0;	}	/* the rest has to be protected against itself */	lock_kernel();	/* if the last data block for this file is the last allocated block, we can	   extend the file trivially, without moving it anywhere */	if (bi->i_eblock == info->si_lf_eblk) {		dprintf("c=%d, b=%08lx, phys=%08lx (simple extension)\n", 				create, block, phys);		map_bh(bh_result, sb, phys);		info->si_freeb -= phys - bi->i_eblock;		info->si_lf_eblk = bi->i_eblock = phys;		mark_inode_dirty(inode);		mark_buffer_dirty(sbh);		err = 0;		goto out;	}	/* Ok, we have to move this entire file to the next free block */	phys = info->si_lf_eblk + 1;	if (bi->i_sblock) { /* if data starts on block 0 then there is no data */		err = bfs_move_blocks(inode->i_sb, bi->i_sblock, 				bi->i_eblock, phys);		if (err) {			dprintf("failed to move ino=%08lx -> fs corruption\n", inode->i_ino);			goto out;		}	} else		err = 0;	dprintf("c=%d, b=%08lx, phys=%08lx (moved)\n", create, block, phys);	bi->i_sblock = phys;	phys += block;	info->si_lf_eblk = bi->i_eblock = phys;	/* this assumes nothing can write the inode back while we are here	 * and thus update inode->i_blocks! (XXX)*/	info->si_freeb -= bi->i_eblock - bi->i_sblock + 1 - inode->i_blocks;	mark_inode_dirty(inode);	mark_buffer_dirty(sbh);	map_bh(bh_result, sb, phys);out:	unlock_kernel();	return err;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/fac92becdaecff64dd91daab0292c5131de92f0d/file.c/clean/fs/bfs/file.c