sunrpc: don't keep expired entries in the auth caches.
currently expired entries remain in the auth caches as long
as there is a reference.
This was needed long ago when the auth_domain cache used the same
cache infrastructure. But since that (being a very different sort
of cache) was separated, this test is no longer needed.
So remove the test on refcnt and tidy up the surrounding code.
This allows the cache_dequeue call (which needed to be there to
drop a potentially awkward reference) can be moved outside of the
spinlock which is a better place for it.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 39bddba..83592e0 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -397,31 +397,28 @@
/* Ok, now to clean this strand */
cp = & current_detail->hash_table[current_index];
- ch = *cp;
- for (; ch; cp= & ch->next, ch= *cp) {
+ for (ch = *cp ; ch ; cp = & ch->next, ch = *cp) {
if (current_detail->nextcheck > ch->expiry_time)
current_detail->nextcheck = ch->expiry_time+1;
if (ch->expiry_time >= get_seconds() &&
ch->last_refresh >= current_detail->flush_time)
continue;
- if (test_and_clear_bit(CACHE_PENDING, &ch->flags))
- cache_dequeue(current_detail, ch);
- if (atomic_read(&ch->ref.refcount) == 1)
- break;
- }
- if (ch) {
*cp = ch->next;
ch->next = NULL;
current_detail->entries--;
rv = 1;
+ break;
}
+
write_unlock(¤t_detail->hash_lock);
d = current_detail;
if (!ch)
current_index ++;
spin_unlock(&cache_list_lock);
if (ch) {
+ if (test_and_clear_bit(CACHE_PENDING, &ch->flags))
+ cache_dequeue(current_detail, ch);
cache_revisit_request(ch);
cache_put(ch, d);
}