Re: [PATCH v2 1/7] mm/page_ext: resurrect struct page extending code for debugging

2014-11-23 Thread Joonsoo Kim
On Fri, Nov 21, 2014 at 03:37:31PM -0800, Andrew Morton wrote: > On Fri, 21 Nov 2014 17:14:00 +0900 Joonsoo Kim wrote: > > > When we debug something, we'd like to insert some information to > > every page. For this purpose, we sometimes modify struct page itself. > > But, this has drawbacks. Firs

Re: [PATCH v2 1/7] mm/page_ext: resurrect struct page extending code for debugging

2014-11-21 Thread Andrew Morton
On Fri, 21 Nov 2014 17:14:00 +0900 Joonsoo Kim wrote: > When we debug something, we'd like to insert some information to > every page. For this purpose, we sometimes modify struct page itself. > But, this has drawbacks. First, it requires re-compile. This makes us > hesitate to use the powerful d

[PATCH v2 1/7] mm/page_ext: resurrect struct page extending code for debugging

2014-11-21 Thread Joonsoo Kim
When we debug something, we'd like to insert some information to every page. For this purpose, we sometimes modify struct page itself. But, this has drawbacks. First, it requires re-compile. This makes us hesitate to use the powerful debug feature so development process is slowed down. And, second,