| commit | ba60eb25ff6be6f8e60488cdfd454e5c612bce60 | [log] [tgz] |
|---|---|---|
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | Sun Apr 14 10:49:37 2013 -0400 |
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | Sun Apr 14 12:26:02 2013 -0400 |
| tree | ee5ebe0a500e5926cf52af808096d8c56eae8657 | |
| parent | b570a975ed276335dc7d148658c1f880ac0a507f [diff] |
SUNRPC: Fix a livelock problem in the xprt->backlog queue This patch ensures that we throttle new RPC requests if there are requests already waiting in the xprt->backlog queue. The reason for doing this is to fix livelock issues that can occur when an existing (high priority) task is waiting in the backlog queue, gets woken up by xprt_free_slot(), but a new task then steals the slot. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>