diff options
| author | Hal Rosenstock <halr@voltaire.com> | 2005-07-27 11:45:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-27 16:26:11 -0700 |
| commit | 2c153b934dca08d58e0aafde18a182e0891aa201 (patch) | |
| tree | e650b3894abf254694e71a8f11ce8b3f72ec5558 /drivers/infiniband | |
| parent | dbf9227bd3dff71c3c2f540cc3e96098d2ab41e7 (diff) | |
| download | op-kernel-dev-2c153b934dca08d58e0aafde18a182e0891aa201.zip op-kernel-dev-2c153b934dca08d58e0aafde18a182e0891aa201.tar.gz | |
[PATCH] IB: Eliminate MAD cache leak associated with local completions
Eliminate MAD cache leak associated with local completions. Also, when
canceling MAD, empty local completion list as well.
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/mad.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index e96ca27..8948f6f 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1994,6 +1994,8 @@ static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv) /* Empty wait list to prevent receives from finding a request */ list_splice_init(&mad_agent_priv->wait_list, &cancel_list); + /* Empty local completion list as well */ + list_splice_init(&mad_agent_priv->local_list, &cancel_list); spin_unlock_irqrestore(&mad_agent_priv->lock, flags); /* Report all cancelled requests */ @@ -2108,6 +2110,7 @@ static void local_completions(void *data) struct ib_mad_local_private *local; struct ib_mad_agent_private *recv_mad_agent; unsigned long flags; + int recv = 0; struct ib_wc wc; struct ib_mad_send_wc mad_send_wc; @@ -2123,10 +2126,10 @@ static void local_completions(void *data) recv_mad_agent = local->recv_mad_agent; if (!recv_mad_agent) { printk(KERN_ERR PFX "No receive MAD agent for local completion\n"); - kmem_cache_free(ib_mad_cache, local->mad_priv); goto local_send_completion; } + recv = 1; /* * Defined behavior is to complete response * before request @@ -2169,6 +2172,8 @@ local_send_completion: spin_lock_irqsave(&mad_agent_priv->lock, flags); list_del(&local->completion_list); atomic_dec(&mad_agent_priv->refcount); + if (!recv) + kmem_cache_free(ib_mad_cache, local->mad_priv); kfree(local); } spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |
