linux-kernel - Re: [PATCH v3 0/5] dax: add PROBE_PREFER

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Message-ID: <380c7a65-109f-43ef-be1d-fc7735d5fe6e@intel.com>
Date: Mon, 27 Oct 2025 08:52:54 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Michal Clapinski <mclapinski@...gle.com>,
 Dan Williams <dan.j.williams@...el.com>,
 Vishal Verma <vishal.l.verma@...el.com>, nvdimm@...ts.linux.dev,
 linux-cxl@...r.kernel.org
Cc: Pasha Tatashin <pasha.tatashin@...een.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/5] dax: add PROBE_PREFER_ASYNCHRONOUS to all the dax
 drivers



On 10/24/25 2:05 PM, Michal Clapinski wrote:
> Comments in linux/device/driver.h say that the goal is to do async
> probing on all devices. The current behavior unnecessarily slows down
> the boot by synchronously probing dax devices, so let's change that.
> 
> For thousands of devices, this change saves >1s of boot time.
> 
> Michal Clapinski (5):
>   dax: add PROBE_PREFER_ASYNCHRONOUS to the pmem driver
>   dax: add PROBE_PREFER_ASYNCHRONOUS to the kmem driver
>   dax: add PROBE_PREFER_ASYNCHRONOUS to the cxl driver
>   dax: add PROBE_PREFER_ASYNCHRONOUS to the hmem drivers
>   dax: add PROBE_PREFER_ASYNCHRONOUS to the dax device driver
> 
>  drivers/dax/cxl.c       | 1 +
>  drivers/dax/device.c    | 3 +++
>  drivers/dax/hmem/hmem.c | 2 ++
>  drivers/dax/kmem.c      | 3 +++
>  drivers/dax/pmem.c      | 1 +
>  5 files changed, 10 insertions(+)
> 

Reviewed-by: Dave Jiang <dave.jiang@...el.com>
for the series