linux-kernel - Re: [RESEND PATCH V2] mm: page_alloc: unreserve highatomic page blocks before oom

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Date: Mon, 22 Jan 2024 22:49:32 +0000
From: Joakim Tjernlund <Joakim.Tjernlund@...inera.com>
To: Greg KH <gregkh@...uxfoundation.org>
CC: "quic_charante@...cinc.com" <quic_charante@...cinc.com>,
	"david@...hat.com" <david@...hat.com>, "mhocko@...e.com" <mhocko@...e.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "linux-mm@...ck.org"
	<linux-mm@...ck.org>, "hannes@...xchg.org" <hannes@...xchg.org>,
	"mgorman@...hsingularity.net" <mgorman@...hsingularity.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"quic_pkondeti@...cinc.com" <quic_pkondeti@...cinc.com>, "vbabka@...e.cz"
	<vbabka@...e.cz>, "stable@...r.kernel.org" <stable@...r.kernel.org>,
	"quic_cgoldswo@...cinc.com" <quic_cgoldswo@...cinc.com>
Subject: Re: [RESEND PATCH V2] mm: page_alloc: unreserve highatomic page
 blocks before oom

Seems like I pasted the wrong commit(sorry), should be: ac3f3b0a55518056bc80ed32a41931c99e1f7d81
I only see that one in master.

________________________________________
From: Greg KH <gregkh@...uxfoundation.org>
Sent: 22 January 2024 18:41
To: Joakim Tjernlund
Cc: quic_charante@...cinc.com; david@...hat.com; mhocko@...e.com; akpm@...ux-foundation.org; linux-mm@...ck.org; hannes@...xchg.org; mgorman@...hsingularity.net; linux-kernel@...r.kernel.org; quic_pkondeti@...cinc.com; vbabka@...e.cz; stable@...r.kernel.org; quic_cgoldswo@...cinc.com
Subject: Re: [RESEND PATCH V2] mm: page_alloc: unreserve highatomic page blocks before oom

On Thu, Jan 18, 2024 at 05:23:58PM +0000, Joakim Tjernlund wrote:
> Could this patch be backported to stable? I have seen similar OOMs with
> reserved_highatomic:4096KB
>
> Upstream commit: 04c8716f7b0075def05dc05646e2408f318167d2

Backported to exactly where?  This commit is in the 4.20 kernel and
newer, please tell me you aren't relying on the 4.19.y kernel anymore...

thanks,

greg k-h