[PATCH v1 17/18] xprtrdma: Remove ro_unmap() from all registration modes

Chuck Lever
2016-04-11T20:12:30Z

Clean up: The ro_unmap method is no longer used.

Signed-off-by: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
net/sunrpc/xprtrdma/fmr_ops.c | 31 --------------------------
net/sunrpc/xprtrdma/frwr_ops.c | 43 ------------------------------------
net/sunrpc/xprtrdma/physical_ops.c | 12 ----------
net/sunrpc/xprtrdma/xprt_rdma.h | 2 --
4 files changed, 88 deletions(-)

diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c
index a658dcf..6326ebe 100644
--- a/net/sunrpc/xprtrdma/fmr_ops.c
+++ b/net/sunrpc/xprtrdma/fmr_ops.c
@@ -328,36 +328,6 @@ fmr_op_unmap_safe(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
}
}

-/* Use the ib_unmap_fmr() verb to prevent further remote
- * access via RDMA READ or RDMA WRITE.
- */
-static int
-fmr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
-{
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
- struct rpcrdma_mr_seg *seg1 = seg;
- struct rpcrdma_mw *mw = seg1->rl_mw;
- int rc, nsegs = seg->mr_nsegs;
-
- dprintk("RPC: %s: FMR %p\n", __func__, mw);
-
- seg1->rl_mw = NULL;
- while (seg1->mr_nsegs--)
- rpcrdma_unmap_one(ia->ri_device, seg++);
- rc = __fmr_unmap(mw);
- if (rc)
- goto out_err;
- rpcrdma_put_mw(r_xprt, mw);
- return nsegs;
-
-out_err:
- /* The FMR is abandoned, but remains in rb_all. fmr_op_destroy
- * will attempt to release it when the transport is destroyed.
- */
- dprintk("RPC: %s: ib_unmap_fmr status %i\n", __func__, rc);
- return nsegs;
-}
-
static void
fmr_op_destroy(struct rpcrdma_buffer *buf)
{
@@ -382,7 +352,6 @@ const struct rpcrdma_memreg_ops rpcrdma_fmr_memreg_ops = {
.ro_map = fmr_op_map,
.ro_unmap_sync = fmr_op_unmap_sync,
.ro_unmap_safe = fmr_op_unmap_safe,
- .ro_unmap = fmr_op_unmap,
.ro_open = fmr_op_open,
.ro_maxpages = fmr_op_maxpages,
.ro_init = fmr_op_init,
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index 79ba323..a192b91 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -640,48 +640,6 @@ frwr_op_unmap_safe(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
}
}

-/* Post a LOCAL_INV Work Request to prevent further remote access
- * via RDMA READ or RDMA WRITE.
- */
-static int
-frwr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
-{
- struct rpcrdma_mr_seg *seg1 = seg;
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
- struct rpcrdma_mw *mw = seg1->rl_mw;
- struct rpcrdma_frmr *frmr = &mw->frmr;
- struct ib_send_wr *invalidate_wr, *bad_wr;
- int rc, nsegs = seg->mr_nsegs;
-
- dprintk("RPC: %s: FRMR %p\n", __func__, mw);
-
- seg1->rl_mw = NULL;
- frmr->fr_state = FRMR_IS_INVALID;
- invalidate_wr = &mw->frmr.fr_invwr;
-
- memset(invalidate_wr, 0, sizeof(*invalidate_wr));
- frmr->fr_cqe.done = frwr_wc_localinv;
- invalidate_wr->wr_cqe = &frmr->fr_cqe;
- invalidate_wr->opcode = IB_WR_LOCAL_INV;
- invalidate_wr->ex.invalidate_rkey = frmr->fr_mr->rkey;
- DECR_CQCOUNT(&r_xprt->rx_ep);
-
- ib_dma_unmap_sg(ia->ri_device, frmr->fr_sg, frmr->fr_nents, frmr->fr_dir);
- read_lock(&ia->ri_qplock);
- rc = ib_post_send(ia->ri_id->qp, invalidate_wr, &bad_wr);
- read_unlock(&ia->ri_qplock);
- if (rc)
- goto out_err;
-
- rpcrdma_put_mw(r_xprt, mw);
- return nsegs;
-
-out_err:
- dprintk("RPC: %s: ib_post_send status %i\n", __func__, rc);
- __frwr_queue_recovery(mw);
- return nsegs;
-}
-
static void
frwr_op_destroy(struct rpcrdma_buffer *buf)
{
@@ -702,7 +660,6 @@ const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops = {
.ro_map = frwr_op_map,
.ro_unmap_sync = frwr_op_unmap_sync,
.ro_unmap_safe = frwr_op_unmap_safe,
- .ro_unmap = frwr_op_unmap,
.ro_open = frwr_op_open,
.ro_maxpages = frwr_op_maxpages,
.ro_init = frwr_op_init,
diff --git a/net/sunrpc/xprtrdma/physical_ops.c b/net/sunrpc/xprtrdma/physical_ops.c
index 95ef3a7..3750596 100644
--- a/net/sunrpc/xprtrdma/physical_ops.c
+++ b/net/sunrpc/xprtrdma/physical_ops.c
@@ -74,17 +74,6 @@ physical_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
return 1;
}

-/* Unmap a memory region, but leave it registered.
- */
-static int
-physical_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
-{
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
-
- rpcrdma_unmap_one(ia->ri_device, seg);
- return 1;
-}
-
/* DMA unmap all memory regions that were mapped for "req".
*/
static void
@@ -125,7 +114,6 @@ const struct rpcrdma_memreg_ops rpcrdma_physical_memreg_ops = {
.ro_map = physical_op_map,
.ro_unmap_sync = physical_op_unmap_sync,
.ro_unmap_safe = physical_op_unmap_safe,
- .ro_unmap = physical_op_unmap,
.ro_open = physical_op_open,
.ro_maxpages = physical_op_maxpages,
.ro_init = physical_op_init,
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 04a7058..24bbea4 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -397,8 +397,6 @@ struct rpcrdma_memreg_ops {
struct rpcrdma_mr_seg *, int, bool);
void (*ro_unmap_sync)(struct rpcrdma_xprt *,
struct rpcrdma_req *);
- int (*ro_unmap)(struct rpcrdma_xprt *,
- struct rpcrdma_mr_seg *);
void (*ro_unmap_safe)(struct rpcrdma_xprt *,
struct rpcrdma_req *, bool);
int (*ro_open)(struct rpcrdma_ia *,