On Wed, Sep 09, 2009 at 04:32:54PM +1000, NeilBrown wrote:
> In cache_defer_req, 'dreq' is used for two significantly different
> values that happen to be of the same type.
>
> This is both confusing, and makes it hard to extend the range of one of
> the values as we will in the next patch.
> So introduce 'discard' to take one of the values.
Applied, thanks.--b.
>
> Signed-off-by: NeilBrown <neilb@xxxxxxx>
> ---
>
> net/sunrpc/cache.c | 18 +++++++++---------
> 1 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
> index 9c8f0cc..54bbd83 100644
> --- a/net/sunrpc/cache.c
> +++ b/net/sunrpc/cache.c
> @@ -500,7 +500,7 @@ static int cache_defer_cnt;
>
> static int cache_defer_req(struct cache_req *req, struct cache_head *item)
> {
> - struct cache_deferred_req *dreq;
> + struct cache_deferred_req *dreq, *discard;
> int hash = DFR_HASH(item);
>
> if (cache_defer_cnt >= DFR_MAX) {
> @@ -525,20 +525,20 @@ static int cache_defer_req(struct cache_req *req, struct cache_head *item)
> list_add(&dreq->hash, &cache_defer_hash[hash]);
>
> /* it is in, now maybe clean up */
> - dreq = NULL;
> + discard = NULL;
> if (++cache_defer_cnt > DFR_MAX) {
> - dreq = list_entry(cache_defer_list.prev,
> - struct cache_deferred_req, recent);
> - list_del_init(&dreq->recent);
> - list_del_init(&dreq->hash);
> + discard = list_entry(cache_defer_list.prev,
> + struct cache_deferred_req, recent);
> + list_del_init(&discard->recent);
> + list_del_init(&discard->hash);
> cache_defer_cnt--;
> }
> spin_unlock(&cache_defer_lock);
>
> - if (dreq) {
> + if (discard)
> /* there was one too many */
> - dreq->revisit(dreq, 1);
> - }
> + discard->revisit(discard, 1);
> +
> if (!test_bit(CACHE_PENDING, &item->flags)) {
> /* must have just been validated... */
> cache_revisit_request(item);
>
>
--
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