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SubjectRe: [PATCH] RCU: Reduce size of rcu_head 1 of 2

On Fri, Aug 08, 2003 at 12:21:04PM +1000, Rusty Russell wrote:
> There are two patches. Both reduce the size of the "struct rcu_head".
> One simply changes the struct rcu_head from a double linked list to a
> single linked list. The other eliminates the "void *data" arg, and
> changes the prototype of the call_rcu() function to take a pointer to
> the struct rcu_head, rather than a user-defined data ptr.
> It is the latter that I am concerned about changing mid-stable-series.

given the number of users (a dozen) I wouldn't be concerned about the
API change either. Much better to change it now that there arne't out of
the tree users yet. IMHO kernel internal API changes aren't a problem if
there are few users all in tree like in this case.

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