To: Chuck Lever
Cc: Steve Wise; Shirley Ma; Hefty, Sean; Roland Dreier; linux-
r...@vger.kernel.org
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: linux-rdma-ow...@vger.kernel.org [mailto:linux-rdma-
ow...@vger.kernel.org
31, 2014 10:45 AM
To: Chuck Lever
Cc: Steve Wise; Shirley Ma; Hefty, Sean; Roland Dreier; linux-
r...@vger.kernel.org
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: linux-rdma-ow...@vger.kernel.org [mailto:linux-rdma-
ow
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
module
On Jul 21, 2014, at 1:07 PM, Devesh Sharma devesh.sha...@emulex.com
wrote:
Until that support is in place, obviously I would prefer that the
removal of the underlying driver be prevented while there are NFS
Wise; Shirley Ma; Hefty, Sean; Roland Dreier; linux-
r...@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
module
On Jul 21, 2014, at 1:07 PM, Devesh Sharma
devesh.sha...@emulex.com
wrote:
Until that support is in place, obviously I would prefer
-
From: Shirley Ma [mailto:shirley...@oracle.com]
Sent: Friday, July 18, 2014 9:18 PM
To: Steve Wise; Devesh Sharma; 'Chuck Lever'
Cc: 'Hefty, Sean'; 'Roland Dreier'; linux-rdma@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
module
On 07/18/2014 06:27
Sent: Monday, July 21, 2014 11:42 AM
To: Shirley Ma; Steve Wise; 'Chuck Lever'
Cc: 'Hefty, Sean'; 'Roland Dreier'; linux-rdma@vger.kernel.org
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
Shirley,
Once rmmod is issued, the connection corresponding
Of Devesh Sharma
Sent: Monday, July 21, 2014 11:42 AM
To: Shirley Ma; Steve Wise; 'Chuck Lever'
Cc: 'Hefty, Sean'; 'Roland Dreier'; linux-rdma@vger.kernel.org
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
Shirley,
Once rmmod is issued, the connection
-Original Message-
From: Chuck Lever [mailto:chuck.le...@oracle.com]
Sent: Monday, July 21, 2014 9:54 AM
To: Devesh Sharma
Cc: Shirley Ma; Steve Wise; Hefty, Sean; Roland Dreier;
linux-rdma@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider module
Hi Devesh-
Thanks for drilling into this further.
On Jul 21, 2014, at 7:48 AM, Devesh Sharma devesh.sha...@emulex.com wrote:
In rpcrdma_ep_connect():
write_lock(ia-ri_qplock);
old = ia
-rdma@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
module
Hi Devesh-
Thanks for drilling into this further.
On Jul 21, 2014, at 7:48 AM, Devesh Sharma devesh.sha...@emulex.com
wrote:
In rpcrdma_ep_connect():
write_lock(ia-ri_qplock
, Sean; Roland Dreier;
linux-rdma@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma
provider module
Hi Devesh-
Thanks for drilling into this further.
On Jul 21, 2014, at 7:48 AM, Devesh Sharma
devesh.sha...@emulex.com wrote
On Jul 21, 2014, at 1:07 PM, Devesh Sharma devesh.sha...@emulex.com wrote:
Until that support is in place, obviously I would prefer that the
removal of the underlying driver be prevented while there are NFS
mounts in place. I think that's what NFS users have come to expect.
In other words,
-Original Message-
From: Steve Wise [mailto:sw...@opengridcomputing.com]
Sent: Friday, July 18, 2014 6:58 PM
To: Devesh Sharma; 'Chuck Lever'
Cc: 'Hefty, Sean'; 'Shirley Ma'; 'Roland Dreier'; linux-rdma@vger.kernel.org
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma
'; Devesh Sharma; 'Roland Dreier'
Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: Steve Wise [mailto:sw...@opengridcomputing.com]
Sent: Thursday, July 17, 2014 2:56 PM
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: Steve Wise [mailto:sw...@opengridcomputing.com]
Sent: Thursday, July 17, 2014 2:56 PM
To: 'Hefty, Sean'; 'Shirley Ma'; 'Devesh Sharma'; 'Roland Dreier'
Cc: 'linux-rdma
We can't really deal with a CM_DEVICE_REMOVE event while there are
active NFS mounts.
System shutdown ordering should guarantee (one would hope) that NFS
mount points are unmounted before the RDMA/IB core infrastructure is
torn down. Ordering shouldn't matter as long all NFS
; 'Roland Dreier'
Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: Steve Wise [mailto:sw...@opengridcomputing.com]
Sent: Thursday, July 17, 2014 2:56 PM
To: 'Hefty, Sean
On 07/18/2014 06:27 AM, Steve Wise wrote:
We can't really deal with a CM_DEVICE_REMOVE event while there are
active NFS mounts.
System shutdown ordering should guarantee (one would hope) that NFS
mount points are unmounted before the RDMA/IB core infrastructure is
torn down. Ordering
On 7/17/2014 9:01 AM, Devesh Sharma wrote:
If verndor driver is attempted for removal while xprtrdma still has an
active mount, the removal of driver may never complete and can cause
unseen races or in worst case system crash.
To solve this, xprtrdma module should get reference of struct
On Jul 17, 2014, at 11:01 AM, Steve Wise sw...@opengridcomputing.com wrote:
On 7/17/2014 9:01 AM, Devesh Sharma wrote:
If verndor driver is attempted for removal while xprtrdma still has an
active mount, the removal of driver may never complete and can cause
unseen races or in worst case
From: Steve Wise [sw...@opengridcomputing.com]
Sent: Thursday, July 17, 2014 8:31 PM
To: Devesh Sharma; Roland Dreier; Hefty, Sean
Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma provider
Replying again, due to mail formatting issue:
-Original Message-
From: Chuck Lever [mailto:chuck.le...@oracle.com]
Sent: Thursday, July 17, 2014 8:36 PM
To: Steve Wise
Cc: Devesh Sharma; Roland Dreier; Hefty, Sean; linux-rdma@vger.kernel.org
Subject: Re: [for-next 1/2] xprtrdma
On 7/17/2014 9:01 AM, Devesh Sharma wrote:
If verndor driver is attempted for removal while xprtrdma still has an
active mount, the removal of driver may never complete and can cause
unseen races or in worst case system crash.
To solve this, xprtrdma module should get reference of
-Original Message-
From: Shirley Ma [mailto:shirley...@oracle.com]
Sent: Thursday, July 17, 2014 1:58 PM
To: Hefty, Sean; Steve Wise; Devesh Sharma; Roland Dreier
Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com
Subject: Re: [for-next 1/2] xprtrdma: take reference of rdma
-Original Message-
From: Hefty, Sean [mailto:sean.he...@intel.com]
Sent: Thursday, July 17, 2014 2:50 PM
To: Steve Wise; 'Shirley Ma'; 'Devesh Sharma'; 'Roland Dreier'
Cc: linux-rdma@vger.kernel.org; chuck.le...@oracle.com
Subject: RE: [for-next 1/2] xprtrdma: take reference
: [for-next 1/2] xprtrdma: take reference of rdma provider module
So the rdma cm is expected to increase the driver reference count
(try_module_get) for
each new cm id, then deference count (module_put) when cm id is
destroyed?
No, I think he's saying the rdma-cm posts
: [for-next 1/2] xprtrdma: take reference of rdma provider module
So the rdma cm is expected to increase the driver reference count
(try_module_get) for
each new cm id, then deference count (module_put) when cm id is
destroyed?
No, I think he's saying the rdma-cm posts a RDMA_CM_DEVICE_REMOVAL
@vger.kernel.org'; 'chuck.le...@oracle.com'
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider module
-Original Message-
From: Hefty, Sean [mailto:sean.he...@intel.com]
Sent: Thursday, July 17, 2014 2:50 PM
To: Steve Wise; 'Shirley Ma'; 'Devesh Sharma'; 'Roland Dreier'
Cc
'; 'Shirley Ma'; 'Devesh Sharma'; 'Roland Dreier'
Cc: 'linux-rdma@vger.kernel.org'; 'chuck.le...@oracle.com'
Subject: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: Hefty, Sean [mailto:sean.he...@intel.com]
Sent: Thursday, July 17
: RE: [for-next 1/2] xprtrdma: take reference of rdma provider
module
-Original Message-
From: linux-rdma-ow...@vger.kernel.org
[mailto:linux-rdma-ow...@vger.kernel.org] On Behalf Of Chuck Lever
Sent: Thursday, July 17, 2014 3:42 PM
To: Steve Wise
Cc: Hefty, Sean; Shirley Ma
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