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[for-next,v14,05/10] RDMA/rxe: Move mr cleanup code to rxe_mr_cleanup()

Message ID 20220421014042.26985-6-rpearsonhpe@gmail.com (mailing list archive)
State Superseded
Delegated to: Jason Gunthorpe
Headers show
Series Fix race conditions in rxe_pool | expand

Commit Message

Bob Pearson April 21, 2022, 1:40 a.m. UTC 
Move the code which tears down an mr to rxe_mr_cleanup to allow
operations holding a reference to the mr to complete.

Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
---
 drivers/infiniband/sw/rxe/rxe_mr.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
index 60a31b718774..fc3942e04a1f 100644
--- a/drivers/infiniband/sw/rxe/rxe_mr.c
+++ b/drivers/infiniband/sw/rxe/rxe_mr.c
@@ -683,14 +683,10 @@  int rxe_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
 {
 	struct rxe_mr *mr = to_rmr(ibmr);
 
-	if (atomic_read(&mr->num_mw) > 0) {
-		pr_warn("%s: Attempt to deregister an MR while bound to MWs\n",
-			__func__);
+	/* See IBA 10.6.7.2.6 */
+	if (atomic_read(&mr->num_mw) > 0)
 		return -EINVAL;
-	}
 
-	mr->state = RXE_MR_STATE_INVALID;
-	rxe_put(mr_pd(mr));
 	rxe_put(mr);
 
 	return 0;
@@ -700,6 +696,8 @@  void rxe_mr_cleanup(struct rxe_pool_elem *elem)
 {
 	struct rxe_mr *mr = container_of(elem, typeof(*mr), elem);
 
+	rxe_put(mr_pd(mr));
+
 	ib_umem_release(mr->umem);
 
 	if (mr->cur_map_set)