preempt_disable(); __get_cpu_var(bh_accounting).nr++; 
get_cpu_var(bh_accounting).nr++; 
struct buffer_head *alloc_buffer_head(unsigned int __nocast gfp_flags){	struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags);	if (ret) {		preempt_disable();		__get_cpu_var(bh_accounting).nr++;		recalc_bh_state();		preempt_enable();	}	return ret;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/736c7b808f38f3bb72941345e11e236ec65dec3d/buffer.c/clean/fs/buffer.c