Instead of leaving orphaned MRs to be released when the transport
is destroyed, release them immediately. The MR free list can now be
replenished if it becomes exhausted.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
net/sunrpc/xprtrdma/fmr_ops.c | 19 +++++++++++++------
net/sunrpc/xprtrdma/frwr_ops.c | 19 +++++++++++++------
2 files changed, 26 insertions(+), 12 deletions(-)
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c
index 840479f..2ad117f 100644
--- a/net/sunrpc/xprtrdma/fmr_ops.c
+++ b/net/sunrpc/xprtrdma/fmr_ops.c
@@ -124,15 +124,22 @@ fmr_op_recover_mr(struct rpcrdma_mw *mw)
/* ORDER: then DMA unmap */
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mw->mw_sg, mw->mw_nents, mw->mw_dir);
- if (rc) {
- pr_err("rpcrdma: FMR reset status %d, %p orphaned\n",
- rc, mw);
- r_xprt->rx_stats.mrs_orphaned++;
- return;
- }
+ if (rc)
+ goto out_release;
rpcrdma_put_mw(r_xprt, mw);
r_xprt->rx_stats.mrs_recovered++;
+ return;
+
+out_release:
+ pr_err("rpcrdma: FMR reset failed (%d), %p released\n", rc, mw);
+ r_xprt->rx_stats.mrs_orphaned++;
+
+ spin_lock(&r_xprt->rx_buf.rb_mwlock);
+ list_del(&mw->mw_all);
+ spin_unlock(&r_xprt->rx_buf.rb_mwlock);
+
+ fmr_op_release_mr(mw);
}
static int
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index f603c3a..38de90c 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -160,15 +160,22 @@ frwr_op_recover_mr(struct rpcrdma_mw *mw)
rc = __frwr_reset_mr(ia, mw);
ib_dma_unmap_sg(ia->ri_device, mw->mw_sg, mw->mw_nents, mw->mw_dir);
- if (rc) {
- pr_err("rpcrdma: FRMR reset status %d, %p orphaned\n",
- rc, mw);
- r_xprt->rx_stats.mrs_orphaned++;
- return;
- }
+ if (rc)
+ goto out_release;
rpcrdma_put_mw(r_xprt, mw);
r_xprt->rx_stats.mrs_recovered++;
+ return;
+
+out_release:
+ pr_err("rpcrdma: FRMR reset failed %d, %p release\n", rc, mw);
+ r_xprt->rx_stats.mrs_orphaned++;
+
+ spin_lock(&r_xprt->rx_buf.rb_mwlock);
+ list_del(&mw->mw_all);
+ spin_unlock(&r_xprt->rx_buf.rb_mwlock);
+
+ frwr_op_release_mr(mw);
}
static int
--
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