ll_rw_block(READA, 1, &bh); brelse(bh); 
if (likely(bh)) { ll_rw_block(READA, 1, &bh); brelse(bh); } 
void __breadahead(struct block_device *bdev, sector_t block, int size){	struct buffer_head *bh = __getblk(bdev, block, size);	ll_rw_block(READA, 1, &bh);	brelse(bh);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/a3e713b5fdd0e54c2e3c8909ccde2a98839e3a52/buffer.c/clean/fs/buffer.c