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[v5,28/30] xprtrdma: Add documenting comment for rpcrdma_buffer_destroy

Message ID 20181219160037.11602.90097.stgit@manet.1015granger.net (mailing list archive)
State New, archived
Headers show
Series NFS/RDMA client for next (4.21) | expand

Commit Message

Chuck Lever Dec. 19, 2018, 4 p.m. UTC 
Make a note of the function's dependency on an earlier ib_drain_qp.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 net/sunrpc/xprtrdma/verbs.c |    8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 11976c3..7749a2b 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1177,6 +1177,14 @@  struct rpcrdma_req *
 	dprintk("RPC:       %s: released %u MRs\n", __func__, count);
 }
 
+/**
+ * rpcrdma_buffer_destroy - Release all hw resources
+ * @buf: root control block for resources
+ *
+ * ORDERING: relies on a prior ib_drain_qp :
+ * - No more Send or Receive completions can occur
+ * - All MRs, reps, and reqs are returned to their free lists
+ */
 void
 rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
 {