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authorTrond Myklebust <Trond.Myklebust@netapp.com>2011-12-01 14:16:17 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-06 14:17:05 -0800
commit9aeeebb28c4bd8c3a2382ff909e82989d22b97a1 (patch)
tree05d4664a9577301faaf00185cf4907b9d84e560c /net
parentc9b5dd12ec6e93b609b0e61acd02944352cd436d (diff)
SUNRPC: Ensure we always bump the backlog queue in xprt_free_slot
commit c25573b5134294c0be82bfaecc6d08136835b271 upstream. Whenever we free a slot, we know that the resulting xprt->num_reqs will be less than xprt->max_reqs, so we know that we can release at least one backlogged rpc_task. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/xprt.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index f4385e45a5fc..c64c0ef519b5 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -995,13 +995,11 @@ out_init_req:
static void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req)
{
- if (xprt_dynamic_free_slot(xprt, req))
- return;
-
- memset(req, 0, sizeof(*req)); /* mark unused */
-
spin_lock(&xprt->reserve_lock);
- list_add(&req->rq_list, &xprt->free);
+ if (!xprt_dynamic_free_slot(xprt, req)) {
+ memset(req, 0, sizeof(*req)); /* mark unused */
+ list_add(&req->rq_list, &xprt->free);
+ }
rpc_wake_up_next(&xprt->backlog);
spin_unlock(&xprt->reserve_lock);
}