[parisc-linux] Progress - Update

Alan Cox alan@lxorguk.ukuu.org.uk
Wed, 1 Dec 1999 18:54:21 +0000 (GMT)


> Also, we may need to flush the cache line for &var.  The coding in buffer.c
> which caused the original panic in xchg looks dubiousin this regoard:
> 
>         /* Update the reuse list */
> 		tail->b_next_free = xchg(&reuse_list, NULL);
> 		reuse_list = bh;

spin lock and atomic ops are expected to be write barriers across all
CPUs