Re: [PATCH 1/2 (repost)] mm: serialize OOM kill operations

[Paul Jackson <pj@sgi.com>]

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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