On Wed, 29 May 2013 15:42:36 -0500 Seth Jennings <sjenn...@linux.vnet.ibm.com> wrote:
> > > > I worry about any code which independently looks at the pageframe > > > > tables and expects to find page struts there. One example is probably > > > > memory_failure() but there are probably others. > > > > ^^ this, please. It could be kinda fatal. > > I'll look into this. > > The expected behavior is that memory_failure() should handle zbud pages in the > same way that it handles in-use slub/slab/slob pages and return -EBUSY. memory_failure() is merely an example of a general problem: code which reads from the memmap[] array and expects its elements to be of type `struct page'. Other examples might be memory hotplugging, memory leak checkers etc. I have vague memories of out-of-tree patches (bigphysarea?) doing this as well. It's a general problem to which we need a general solution. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
