Re: [PATCH 10/10] IB: remove the unused usecnt field from struct ib_mr

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On 12/20/2015 9:25 AM, Or Gerlitz wrote:
On 12/18/2015 3:55 PM, Christoph Hellwig wrote:
  diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 284916d..e45776e 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1306,7 +1306,6 @@ struct ib_mr {
      u64           iova;
      u32           length;
      unsigned int       page_size;
-    atomic_t       usecnt; /* count number of MWs */
  };

This comment is part of Roland's uverbs commit.

I saw now that you removed in-kernel support for MWs as a downstream patch
of this series. I guess this cleanup needs to go there as the refcount field of
kernel MRs relates to MWs. This will also help someone coming in the future
and returning the in-kernel MW support to avoid forgetting on doing the refs.

Or.
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