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-rw-r--r--net/sunrpc/cache.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index e433e7580e27..0d6002f26d82 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -37,7 +37,7 @@
#define RPCDBG_FACILITY RPCDBG_CACHE
-static void cache_defer_req(struct cache_req *req, struct cache_head *item);
+static bool cache_defer_req(struct cache_req *req, struct cache_head *item);
static void cache_revisit_request(struct cache_head *item);
static void cache_init(struct cache_head *h)
@@ -268,9 +268,11 @@ int cache_check(struct cache_detail *detail,
}
if (rv == -EAGAIN) {
- cache_defer_req(rqstp, h);
- if (!test_bit(CACHE_PENDING, &h->flags)) {
- /* Request is not deferred */
+ if (!cache_defer_req(rqstp, h)) {
+ /*
+ * Request was not deferred; handle it as best
+ * we can ourselves:
+ */
rv = cache_is_valid(detail, h);
if (rv == -EAGAIN)
rv = -ETIMEDOUT;
@@ -618,18 +620,19 @@ static void cache_limit_defers(void)
discard->revisit(discard, 1);
}
-static void cache_defer_req(struct cache_req *req, struct cache_head *item)
+/* Return true if and only if a deferred request is queued. */
+static bool cache_defer_req(struct cache_req *req, struct cache_head *item)
{
struct cache_deferred_req *dreq;
if (req->thread_wait) {
cache_wait_req(req, item);
if (!test_bit(CACHE_PENDING, &item->flags))
- return;
+ return false;
}
dreq = req->defer(req);
if (dreq == NULL)
- return;
+ return false;
setup_deferral(dreq, item, 1);
if (!test_bit(CACHE_PENDING, &item->flags))
/* Bit could have been cleared before we managed to
@@ -638,6 +641,7 @@ static void cache_defer_req(struct cache_req *req, struct cache_head *item)
cache_revisit_request(item);
cache_limit_defers();
+ return true;
}
static void cache_revisit_request(struct cache_head *item)
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