diff options
Diffstat (limited to 'net/sunrpc/xprtmultipath.c')
| -rw-r--r-- | net/sunrpc/xprtmultipath.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c index 5df4e7adedf0..c12778e1235e 100644 --- a/net/sunrpc/xprtmultipath.c +++ b/net/sunrpc/xprtmultipath.c @@ -194,9 +194,21 @@ void xprt_iter_default_rewind(struct rpc_xprt_iter *xpi) } static +bool xprt_is_active(const struct rpc_xprt *xprt) +{ + return kref_read(&xprt->kref) != 0; +} + +static struct rpc_xprt *xprt_switch_find_first_entry(struct list_head *head) { - return list_first_or_null_rcu(head, struct rpc_xprt, xprt_switch); + struct rpc_xprt *pos; + + list_for_each_entry_rcu(pos, head, xprt_switch) { + if (xprt_is_active(pos)) + return pos; + } + return NULL; } static @@ -214,9 +226,12 @@ struct rpc_xprt *xprt_switch_find_current_entry(struct list_head *head, const struct rpc_xprt *cur) { struct rpc_xprt *pos; + bool found = false; list_for_each_entry_rcu(pos, head, xprt_switch) { if (cur == pos) + found = true; + if (found && xprt_is_active(pos)) return pos; } return NULL; @@ -261,9 +276,12 @@ struct rpc_xprt *xprt_switch_find_next_entry(struct list_head *head, const struct rpc_xprt *cur) { struct rpc_xprt *pos, *prev = NULL; + bool found = false; list_for_each_entry_rcu(pos, head, xprt_switch) { if (cur == prev) + found = true; + if (found && xprt_is_active(pos)) return pos; prev = pos; } |