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From: Muchun Song <songmuchun@bytedance.com>
To: Zi Yan <ziy@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	David Hildenbrand <david@redhat.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Qian Cai <quic_qiancai@quicinc.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Mel Gorman <mgorman@techsingularity.net>,
	Eric Ren <renzhengeek@gmail.com>, Mike Rapoport <rppt@kernel.org>,
	Oscar Salvador <osalvador@suse.de>,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	Anshuman Khandual <anshuman.khandual@arm.com>
Subject: Re: [PATCH] mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock()
Date: Tue, 31 May 2022 13:40:39 +0800	[thread overview]
Message-ID: <YpWqV2PKLc5Ss3XB@FVFYT0MHHV2J.usts.net> (raw)
In-Reply-To: <20220531024450.2498431-1-zi.yan@sent.com>

On Mon, May 30, 2022 at 10:44:50PM -0400, Zi Yan wrote:
> From: Zi Yan <ziy@nvidia.com>
> 
> When compound_nr(page) was used, page was not guaranteed to be the head
> of the compound page and it could cause an infinite loop. Fix it by calling
> it on the head page.
> 
> Fixes: b2c9e2fbba32 ("mm: make alloc_contig_range work at pageblock granularity")
> Reported-by: Anshuman Khandual <anshuman.khandual@arm.com>
> Link: https://lore.kernel.org/linux-mm/20220530115027.123341-1-anshuman.khandual@arm.com/
> Signed-off-by: Zi Yan <ziy@nvidia.com>

Acked-by: Muchun Song <songmuchun@bytedance.com>

Thanks.


  parent reply	other threads:[~2022-05-31  5:40 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-31  2:44 Zi Yan
2022-05-31  3:12 ` Anshuman Khandual
2022-05-31  5:40 ` Muchun Song [this message]
2022-05-31  8:56 ` Oscar Salvador
2022-05-31  9:05 ` Miaohe Lin

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