Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4
From: Evgeny Baskakov
Date: Mon Jul 10 2017 - 20:17:29 EST
On 7/10/17 4:43 PM, Jerome Glisse wrote:
On Mon, Jul 10, 2017 at 03:59:37PM -0700, Evgeny Baskakov wrote:
...
Horrible stupid bug in the code, most likely from cut and paste. Attached
patch should fix it. I don't know how long it took for you to trigger it.
Jérôme
Thanks, this indeed fixes the problem! Yes, it took a nightly run before
it triggered.
One a side note, should this "return NULL" be replaced with "return
ERR_PTR(-ENOMEM)"?
struct hmm_device *hmm_device_new(void *drvdata)
{
...
if (hmm_device->minor >= HMM_DEVICE_MAX) {
spin_unlock(&hmm_device_lock);
kfree(hmm_device);
-> return NULL;
}
Thanks!
Evgeny Baskakov
NVIDIA