[v3,0/2] Leave IRQs enabled for per-cpu page allocations

Message ID	20221118101714.19590-1-mgorman@techsingularity.net (mailing list archive)
Headers	show Return-Path: <owner-linux-mm@kvack.org> From: Mel Gorman <mgorman@techsingularity.net> To: Andrew Morton <akpm@linux-foundation.org> Cc: Hugh Dickins <hughd@google.com>, Yu Zhao <yuzhao@google.com>, Vlastimil Babka <vbabka@suse.cz>, Marcelo Tosatti <mtosatti@redhat.com>, Michal Hocko <mhocko@kernel.org>, Marek Szyprowski <m.szyprowski@samsung.com>, LKML <linux-kernel@vger.kernel.org>, Linux-MM <linux-mm@kvack.org>, Mel Gorman <mgorman@techsingularity.net> Subject: [PATCH v3 0/2] Leave IRQs enabled for per-cpu page allocations Date: Fri, 18 Nov 2022 10:17:12 +0000 Message-Id: <20221118101714.19590-1-mgorman@techsingularity.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	Leave IRQs enabled for per-cpu page allocations \| expand [v3,0/2] Leave IRQs enabled for per-cpu page allocations [1/2] mm/page_alloc: Always remove pages from temporary list [2/2] mm/page_alloc: Leave IRQs enabled for per-cpu page allocations

Message ID

20221118101714.19590-1-mgorman@techsingularity.net (mailing list archive)

Headers

From: Mel Gorman <mgorman@techsingularity.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>,
	Yu Zhao <yuzhao@google.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Michal Hocko <mhocko@kernel.org>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>,
	Mel Gorman <mgorman@techsingularity.net>
Subject: [PATCH v3 0/2] Leave IRQs enabled for per-cpu page allocations
Date: Fri, 18 Nov 2022 10:17:12 +0000
Message-Id: <20221118101714.19590-1-mgorman@techsingularity.net>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

Leave IRQs enabled for per-cpu page allocations | expand

Message

Mel Gorman Nov. 18, 2022, 10:17 a.m. UTC

Changelog since V2
o Fix list corruption issue					(hughd)
o Tighen up locking protocol					(hughd)
o Micro-optimisations						(hughd)

Changelog since V1
o Use trylock in free_unref_page_list due to IO completion from
  softirq context						(yuzhao)

This was a standalone patch but now split in two. The main changes since
v2 are fixing the issues exposed by Hugh's shmfs stress test.

Patch 1 is a long-standing issue that is technically a bug but happened
to work because of how it was used.

Patch 2 leaves IRQs enabled for most PCP allocations with more details
in the changelog itself.