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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks Greg for the response. RHEL has not been very helpful. I'm not looki= ng to ask for patches because of the old versions. These messages appear in production runs, raising concerns about possible f= ailures. Thus, the question is: Can they be ignored safely? Best, Bharat ________________________________ From: Greg KH Sent: Monday, May 19, 2025 05:02 PM To: Bharat Agrawal Cc: hughd@google.com ; akpm@linux-foundation.org ; rientjes@google.com ; zhangyiru3@= huawei.com ; liuzixian4@huawei.com ; mhocko@suse.com ; wuxu.wu@huawei.com ; linux-fsdevel@vger.kernel.org ; lin= ux-kernel@vger.kernel.org ; linux-api@vger.ke= rnel.org ; linux-mm@kvack.org Subject: Re: mlock ulimits for SHM_HUGETLB [External Sender] On Mon, May 19, 2025 at 10:23:33AM +0000, Bharat Agrawal wrote: > Hi all, > > Could anyone please help comment on the risks associated with an applicat= ion throwing the "Using mlock ulimits for SHM_HUGETLB is deprecated" messag= e on RHEL 8.9 with 4.18.0-513.18.1.el8_9.x86_64 Linux kernel? Why not ask RHEL support, given that you are paying them for that in order to be using that kernel version, right? Also note that 4.18.y is VERY old and obsolete and not supported by the community at all. Good luck! greg k-h --_000_SJ2PR01MB834507D46F44F65980FE09668E9CASJ2PR01MB8345prod_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Thanks Greg for the response. RHEL has not been very helpful. I'm not looki= ng to ask for patches because of the old versions.
These messages appear in production runs, raising concerns about possible f= ailures. Thus, the question is: Can they be ignored safely?


Best,
Bharat

From: Greg KH <gregkh@li= nuxfoundation.org>
Sent: Monday, May 19, 2025 05:02 PM
To: Bharat Agrawal <bharat.agrawal@ansys.com>
Cc: hughd@google.com <hughd@google.com>; akpm@linux-foundation= .org <akpm@linux-foundation.org>; rientjes@google.com <rientjes@go= ogle.com>; zhangyiru3@huawei.com <zhangyiru3@huawei.com>; liuzixia= n4@huawei.com <liuzixian4@huawei.com>; mhocko@suse.com <mhocko@sus= e.com>; wuxu.wu@huawei.com <wuxu.wu@huawei.com>; linux-fsdevel@vger.kernel.o= rg <linux-fsdevel@vger.kernel.org>; linux-kernel@vger.kernel.org <= linux-kernel@vger.kernel.org>; linux-api@vger.kernel.org <linux-api@v= ger.kernel.org>; linux-mm@kvack.org <linux-mm@kvack.org>
Subject: Re: mlock ulimits for SHM_HUGETLB
 
[External Sender]

On Mon, May 19, 2025 at 10:23:33AM +0000, Bharat Agrawal wrote:
> Hi all,
>
> Could anyone please help comment on the risks associated with an appli= cation throwing the "Using mlock ulimits for SHM_HUGETLB is deprecated= " message on RHEL 8.9 with 4.18.0-513.18.1.el8_9.x86_64 Linux kernel?<= br>
Why not ask RHEL support, given that you are paying them for that in
order to be using that kernel version, right?

Also note that 4.18.y is VERY old and obsolete and not supported by the
community at all.

Good luck!

greg k-h
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