On Thu, Sep 20, 2018 at 07:40:39PM +0300, Leon Romanovsky wrote:

quoted

quoted

The protection is done with global device_lock because it is used in
allocation and deallocation phases. At this stage, this lock is not
busy and easily can be moved to be per-device, once it will be needed.

Signed-off-by: Leon Romanovsky <redacted>
 drivers/infiniband/core/device.c | 24 +++++++++++++++++++++++-
 include/rdma/ib_verbs.h          |  8 +++++++-
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 5a680a88aa87..3270cde6d806 100644
+++ b/drivers/infiniband/core/device.c

@@ -170,6 +170,14 @@ static struct ib_device *__ib_device_get_by_name(const char *name)
 	return NULL;
 }

+void ib_device_get_name(struct ib_device *ibdev, char *name)
+{
+	down_read(&lists_rwsem);
+	strlcpy(name, ibdev->name, IB_DEVICE_NAME_MAX);
+	up_read(&lists_rwsem);
+}
+EXPORT_SYMBOL(ib_device_get_name);

I think we have to follow netdev and just rely on device_rename()
being 'good enough'.

Switch everything to use dev_name()/etc rather than try and do
something like this so the responsibility is on the device core to
keep this working, not us.

Turns out I have a series for that for unrelated reasons..

And what should I do now with this knowledge?

Maybe I can send it today..

Jason