linux-kernel - [PATCH] staging: lustre: ko2iblbd: handle ib_dereg

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Message-Id: <1475461351-21495-1-git-send-email-jsimmons@infradead.org>
Date:   Sun,  2 Oct 2016 22:22:31 -0400
From:   James Simmons <jsimmons@...radead.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>,
        James Simmons <jsimmons@...radead.org>
Subject: [PATCH] staging: lustre: ko2iblbd: handle ib_dereg_mr removal

In the rdma-next tree to be merged for 4.9-rc1 removes
the IB core function ib_get_dma_mr. This patch migrates
us way from this former function.

Signed-off-by: James Simmons <jsimmons@...radead.org>
---
 .../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c    |   19 ++++++++++++-------
 .../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h    |    5 +++++
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index c7a5d49..4010591 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -1316,7 +1316,7 @@ static void kiblnd_destroy_fmr_pool(struct kib_fmr_pool *fpo)
 		list_for_each_entry_safe(frd, tmp, &fpo->fast_reg.fpo_pool_list,
 					 frd_list) {
 			list_del(&frd->frd_list);
-			ib_dereg_mr(frd->frd_mr);
+			kib_dereg_mr(fpo->fpo_hdev, frd->frd_mr);
 			LIBCFS_FREE(frd, sizeof(*frd));
 			i++;
 		}
@@ -1422,14 +1422,14 @@ static int kiblnd_alloc_freg_pool(struct kib_fmr_poolset *fps, struct kib_fmr_po
 
 out_middle:
 	if (frd->frd_mr)
-		ib_dereg_mr(frd->frd_mr);
+		kib_dereg_mr(fpo->fpo_hdev, frd->frd_mr);
 	LIBCFS_FREE(frd, sizeof(*frd));
 
 out:
 	list_for_each_entry_safe(frd, tmp, &fpo->fast_reg.fpo_pool_list,
 				 frd_list) {
 		list_del(&frd->frd_list);
-		ib_dereg_mr(frd->frd_mr);
+		kib_dereg_mr(fpo->fpo_hdev, frd->frd_mr);
 		LIBCFS_FREE(frd, sizeof(*frd));
 	}
 
@@ -2288,8 +2288,8 @@ static void kiblnd_hdev_cleanup_mrs(struct kib_hca_dev *hdev)
 	if (!hdev->ibh_mrs)
 		return;
 
-	ib_dereg_mr(hdev->ibh_mrs);
-
+	kib_dereg_mr(hdev, hdev->ibh_mrs);
+	hdev->ibh_pd->device->dereg_mr(hdev->ibh_mrs);
 	hdev->ibh_mrs = NULL;
 }
 
@@ -2316,13 +2316,18 @@ static int kiblnd_hdev_setup_mrs(struct kib_hca_dev *hdev)
 	if (rc)
 		return rc;
 
-	mr = ib_get_dma_mr(hdev->ibh_pd, acflags);
+	mr = hdev->ibh_pd->device->get_dma_mr(hdev->ibh_pd, acflags);
 	if (IS_ERR(mr)) {
-		CERROR("Failed ib_get_dma_mr : %ld\n", PTR_ERR(mr));
+		CERROR("Failed device get_dma_mr : %ld\n", PTR_ERR(mr));
 		kiblnd_hdev_cleanup_mrs(hdev);
 		return PTR_ERR(mr);
 	}
 
+	mr->device = hdev->ibh_pd->device;
+	mr->pd = hdev->ibh_pd;
+	mr->uobject = NULL;
+	mr->need_inval = false;
+
 	hdev->ibh_mrs = mr;
 
 	return 0;
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
index 1457697..f8b49c5 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
@@ -178,6 +178,11 @@ struct kib_hca_dev {
 	atomic_t           ibh_ref;             /* refcount */
 };
 
+static inline void kib_dereg_mr(struct kib_hca_dev *hdev, struct ib_mr *mr)
+{
+	hdev->ibh_pd->device->dereg_mr(mr);
+}
+
 /** # of seconds to keep pool alive */
 #define IBLND_POOL_DEADLINE     300
 /** # of seconds to retry if allocation failed */
-- 
1.7.1