Device removal is now adequately supported. Pinning the underlying
device driver to prevent removal while an NFS mount is active is no
longer necessary.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
net/sunrpc/xprtrdma/verbs.c | 33 +++++++--------------------------
1 file changed, 7 insertions(+), 26 deletions(-)
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index ef3ceec..41f00c9 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -53,7 +53,7 @@
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/svc_rdma.h>
#include <asm/bitops.h>
-#include <linux/module.h> /* try_module_get()/module_put() */
+
#include <rdma/ib_cm.h>
#include "xprt_rdma.h"
@@ -344,14 +344,6 @@
return 0;
}
-static void rpcrdma_destroy_id(struct rdma_cm_id *id)
-{
- if (id) {
- module_put(id->device->owner);
- rdma_destroy_id(id);
- }
-}
-
static struct rdma_cm_id *
rpcrdma_create_id(struct rpcrdma_xprt *xprt,
struct rpcrdma_ia *ia, struct sockaddr *addr)
@@ -386,16 +378,6 @@ static void rpcrdma_destroy_id(struct rdma_cm_id *id)
goto out;
}
- /* FIXME:
- * Until xprtrdma supports DEVICE_REMOVAL, the provider must
- * be pinned while there are active NFS/RDMA mounts to prevent
- * hangs and crashes at umount time.
- */
- if (!ia->ri_async_rc && !try_module_get(id->device->owner)) {
- dprintk("RPC: %s: Failed to get device module\n",
- __func__);
- ia->ri_async_rc = -ENODEV;
- }
rc = ia->ri_async_rc;
if (rc)
goto out;
@@ -405,21 +387,20 @@ static void rpcrdma_destroy_id(struct rdma_cm_id *id)
if (rc) {
dprintk("RPC: %s: rdma_resolve_route() failed %i\n",
__func__, rc);
- goto put;
+ goto out;
}
rc = wait_for_completion_interruptible_timeout(&ia->ri_done, wtimeout);
if (rc < 0) {
dprintk("RPC: %s: wait() exited: %i\n",
__func__, rc);
- goto put;
+ goto out;
}
rc = ia->ri_async_rc;
if (rc)
- goto put;
+ goto out;
return id;
-put:
- module_put(id->device->owner);
+
out:
rdma_destroy_id(id);
return ERR_PTR(rc);
@@ -546,7 +527,7 @@ static void rpcrdma_destroy_id(struct rdma_cm_id *id)
if (ia->ri_id != NULL && !IS_ERR(ia->ri_id)) {
if (ia->ri_id->qp)
rdma_destroy_qp(ia->ri_id);
- rpcrdma_destroy_id(ia->ri_id);
+ rdma_destroy_id(ia->ri_id);
}
ia->ri_id = NULL;
ia->ri_device = NULL;
@@ -799,7 +780,7 @@ static void rpcrdma_destroy_id(struct rdma_cm_id *id)
rdma_destroy_qp(old);
out_destroy:
- rpcrdma_destroy_id(old);
+ rdma_destroy_id(old);
out:
return rc;
}
--
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