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

    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.

    Andrea
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