[PATCH WIP 26/43] qib: Allocate a private page list in ib_alloc_mr

[Sagi Grimberg]

Signed-off-by: Sagi Grimberg <sa...@mellanox.com>
---
 drivers/infiniband/hw/qib/qib_mr.c    | 9 +++++++++
 drivers/infiniband/hw/qib/qib_verbs.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/drivers/infiniband/hw/qib/qib_mr.c 
b/drivers/infiniband/hw/qib/qib_mr.c
index 2a4afea..a58a347 100644
--- a/drivers/infiniband/hw/qib/qib_mr.c
+++ b/drivers/infiniband/hw/qib/qib_mr.c
@@ -303,6 +303,7 @@ int qib_dereg_mr(struct ib_mr *ibmr)
        int ret = 0;
        unsigned long timeout;
 
+       kfree(mr->pl);
        qib_free_lkey(&mr->mr);
 
        qib_put_mr(&mr->mr); /* will set completion if last */
@@ -341,7 +342,15 @@ struct ib_mr *qib_alloc_mr(struct ib_pd *pd,
        if (IS_ERR(mr))
                return (struct ib_mr *)mr;
 
+       mr->pl = kcalloc(max_entries, sizeof(u64), GFP_KERNEL);
+       if (!mr->pl)
+               goto err;
+
        return &mr->ibmr;
+
+err:
+       qib_dereg_mr(&mr->ibmr);
+       return ERR_PTR(-ENOMEM);
 }
 
 struct ib_fast_reg_page_list *
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h 
b/drivers/infiniband/hw/qib/qib_verbs.h
index 8fbd995..c8062ae 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -330,6 +330,8 @@ struct qib_mr {
        struct ib_mr ibmr;
        struct ib_umem *umem;
        struct qib_mregion mr;  /* must be last */
+       u64 *pl;
+       u32 npages;
 };
 
 /*
-- 
1.8.4.3

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