From: Long Li <longli@xxxxxxxxxxxxx>
Define wait queue in preparation for implement SMBD send. SMBD uses credit based flow control system, if the client doesn't have enough credits then it must wait for credits.
Signed-off-by: Long Li <longli@xxxxxxxxxxxxx>
---
fs/cifs/cifsrdma.c | 1 +
fs/cifs/cifsrdma.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/fs/cifs/cifsrdma.c b/fs/cifs/cifsrdma.c
index 9610897..8aa8a47 100644
--- a/fs/cifs/cifsrdma.c
+++ b/fs/cifs/cifsrdma.c
@@ -484,6 +484,7 @@ struct cifs_rdma_info* cifs_create_rdma_session(
mempool_free_slab, info->response_cache);
allocate_receive_buffers(info, info->receive_credit_max);
+ init_waitqueue_head(&info->wait_send_queue);
out2:
rdma_destroy_id(info->id);
diff --git a/fs/cifs/cifsrdma.h b/fs/cifs/cifsrdma.h
index e925aa4..287b5b1 100644
--- a/fs/cifs/cifsrdma.h
+++ b/fs/cifs/cifsrdma.h
@@ -62,6 +62,8 @@ struct cifs_rdma_info {
struct list_head receive_queue;
spinlock_t receive_queue_lock;
+ wait_queue_head_t wait_send_queue;
+
// request pool for RDMA send
struct kmem_cache *request_cache;
mempool_t *request_mempool;
--
2.7.4
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