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authorChuck Lever <chuck.lever@oracle.com>2016-06-29 13:54:08 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2016-07-11 15:50:43 -0400
commit2ffc871a574daa760ef4f7750e0a36187a45754a (patch)
tree30fcb24659d089a55417df53c4d8b33668367df9 /net
parente2ac236c0b65129f12fef358390f76cc3cacb865 (diff)
downloadop-kernel-dev-2ffc871a574daa760ef4f7750e0a36187a45754a.zip
op-kernel-dev-2ffc871a574daa760ef4f7750e0a36187a45754a.tar.gz
xprtrdma: Release orphaned MRs immediately
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@oracle.com> Tested-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/xprtrdma/fmr_ops.c19
-rw-r--r--net/sunrpc/xprtrdma/frwr_ops.c19
2 files changed, 26 insertions, 12 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c
index 758cd1a..6521dce 100644
--- a/net/sunrpc/xprtrdma/fmr_ops.c
+++ b/net/sunrpc/xprtrdma/fmr_ops.c
@@ -134,15 +134,22 @@ 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 e77776b..f4c06c8 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -177,15 +177,22 @@ 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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