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SubjectRe: [PATCH 1/2 (repost)] mm: serialize OOM kill operations
Dave wrote:
> @@ -350,6 +353,8 @@ struct mm_struct {
> /* aio bits */
> rwlock_t ioctx_list_lock;
> struct kioctx *ioctx_list;
> +
> + unsigned long flags;

I see Andi didn't reply to your question concerning what
struct he saw a 'flags' in.

Adding a flags word still costs a slot in mm_struct.

Adding a 'oom_notify' bitfield after the existing 'dumpable'
bitfield in mm_struct would save that slot:

unsigned dumpable:2;
unsigned oom_notify:1;

--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
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