Subject: [PATCH] qib_keys: Replace rcu_assign_pointer() with
RCU_INIT_POINTER()
I would prefer the summary be:
IB/qib: qib_remove_lkey() Replace rcu_assign_pointer() with
RCU_INIT_POINTER()
Otherwise the patch looks ok and has been tested.
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Subject: [PATCH] qib: qib_qp: Replace rcu_assign_pointer() with
RCU_INIT_POINTER()
Why not consolidate this with
http://marc.info/?l=linux-rdmam=140836578119485w=2 so there is just one patch?
Mike
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Hello,
Although the SRP protocol supports multichannel operation, although
since considerable time RDMA HCA's are available that support multiple
completion vectors and although multichannel operation yields better
performance than using a single channel, the Linux SRP initiator does
not yet
[PATCH 1/8] blk-mq: Use all available hardware queues
Suppose that a system has two CPU sockets, three cores per socket,
that it does not support hyperthreading and that four hardware
queues are provided by a block driver. With the current algorithm
this will lead to the following assignment of
Attempting to connect three times may be insufficient after an
initiator system that was using multiple RDMA channels tries to
relogin. Additionally, this login retry mechanism is a workaround
for particular behavior of the IB/CM. Since the srp_daemon retries
a failed login attempt anyway, remove
If a cable is pulled during LUN scanning it can happen that the
SRP rport and the SCSI host have been created but no LUNs have been
added to the SCSI host. Since multipathd only sends SCSI commands
to a SCSI target if one or more SCSI devices are present and since
there is no keepalive mechanism
Improve performance by using multiple RDMA/RC channels per SCSI host
for communicating with an SRP target.
Signed-off-by: Bart Van Assche bvanass...@acm.org
---
Documentation/ABI/stable/sysfs-driver-ib_srp | 25 +-
drivers/infiniband/ulp/srp/ib_srp.c | 337 ---
Changes in this patch:
- Move channel variables into a new structure (struct srp_rdma_ch).
- cm_id and completion handler context pointer are now of type
srp_rdma_ch * insteoad of srp_target_port *.
No functionality is changed.
Signed-off-by: Bart Van Assche bvanass...@acm.org
---
Hi Bart and all,
During go through SRP FMR support, I found ib_srp pre-alloc
fmr_list/map_page in each request,
fmr_list are alloced as many as target-cmd_sg_cnt
I add some debug message when run fio test with different settings.
Result show, state.ndesc and state.nmdesc is 1, state.npages is 0,
On 09/19/14 15:11, Jinpu Wang wrote:
During go through SRP FMR support, I found ib_srp pre-alloc
fmr_list/map_page in each request,
fmr_list are alloced as many as target-cmd_sg_cnt
I add some debug message when run fio test with different settings.
Result show, state.ndesc and state.nmdesc is
On Fri, Sep 19, 2014 at 9:00 PM, Bart Van Assche bvanass...@acm.org wrote:
Improve performance by using multiple RDMA/RC channels per SCSI host
for communicating with an SRP target.
Signed-off-by: Bart Van Assche bvanass...@acm.org
---
Documentation/ABI/stable/sysfs-driver-ib_srp | 25 +-
Hello Jack,
Did you know that file descriptor 0 corresponds to stdin ? With command-line
option -w the test program reads data from stdin and sends that data to a
SCSI device. I think the test program is waiting for you to provide input
data :-)
Bart.
Thanks Bart,
Now I know it:)
This
On 09/19/14 17:27, Ming Lei wrote:
On Fri, Sep 19, 2014 at 11:21 PM, Bart Van Assche bvanass...@acm.org wrote:
On 09/19/14 16:28, Ming Lei wrote:
On Fri, Sep 19, 2014 at 9:00 PM, Bart Van Assche bvanass...@acm.org
wrote:
@@ -2643,7 +2754,8 @@ static struct scsi_host_template srp_template =
On 09/19/2014 09:35 AM, Bart Van Assche wrote:
On 09/19/14 17:27, Ming Lei wrote:
On Fri, Sep 19, 2014 at 11:21 PM, Bart Van Assche bvanass...@acm.org wrote:
On 09/19/14 16:28, Ming Lei wrote:
On Fri, Sep 19, 2014 at 9:00 PM, Bart Van Assche bvanass...@acm.org
wrote:
@@ -2643,7 +2754,8 @@
On Fri, Sep 19, 2014 at 5:35 PM, Jinpu Wang jinpu.w...@profitbricks.com wrote:
Hello Jack,
Did you know that file descriptor 0 corresponds to stdin ? With command-line
option -w the test program reads data from stdin and sends that data to a
SCSI device. I think the test program is waiting
On 9/19/2014 6:38 PM, Jens Axboe wrote:
On 09/19/2014 09:35 AM, Bart Van Assche wrote:
On 09/19/14 17:27, Ming Lei wrote:
On Fri, Sep 19, 2014 at 11:21 PM, Bart Van Assche bvanass...@acm.org
wrote:
On 09/19/14 16:28, Ming Lei wrote:
On Fri, Sep 19, 2014 at 9:00 PM, Bart Van Assche
On 09/19/2014 11:30 AM, Sagi Grimberg wrote:
On 9/19/2014 6:38 PM, Jens Axboe wrote:
On 09/19/2014 09:35 AM, Bart Van Assche wrote:
On 09/19/14 17:27, Ming Lei wrote:
On Fri, Sep 19, 2014 at 11:21 PM, Bart Van Assche bvanass...@acm.org
wrote:
On 09/19/14 16:28, Ming Lei wrote:
On Fri, Sep
On 9/19/2014 3:56 PM, Bart Van Assche wrote:
[PATCH 1/8] blk-mq: Use all available hardware queues
Suppose that a system has two CPU sockets, three cores per socket,
that it does not support hyperthreading and that four hardware
queues are provided by a block driver. With the current
On 9/19/2014 3:57 PM, Bart Van Assche wrote:
Allow a SCSI LLD to declare how many hardware queues it supports
by setting Scsi_Host.nr_hw_queues before calling scsi_add_host().
Note: it is assumed that each hardware queue has a queue depth of
shost-can_queue. In other words, the total queue
On Fri, Sep 19, 2014 at 11:33:15AM -0600, Jens Axboe wrote:
That'd be fine as well. The mapping is cheap, though, but it would make
sense to have an appropriate way to just pass it in like it happens for
-queue_rq() for native blk-mq drivers.
I think just passing the hw_ctx is fine. But I
On Fri, Sep 19, 2014 at 09:05:53PM +0300, Sagi Grimberg wrote:
I think this patch should be squashed with passing LLD hctx patch (in
whatever form it ends up).
Agreed.
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On 9/19/2014 3:58 PM, Bart Van Assche wrote:
Attempting to connect three times may be insufficient after an
initiator system that was using multiple RDMA channels tries to
relogin. Additionally, this login retry mechanism is a workaround
for particular behavior of the IB/CM. Since the
On 09/19/2014 06:55 AM, Bart Van Assche wrote:
Hello,
Although the SRP protocol supports multichannel operation, although
since considerable time RDMA HCA's are available that support multiple
completion vectors and although multichannel operation yields better
performance than using a
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