From: Oscar Salvador <osalvador@suse.de>
To: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
Michal Hocko <mhocko@kernel.org>,
Muchun Song <songmuchun@bytedance.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 4/7] mm,hugetlb: Split prep_new_huge_page functionality
Date: Wed, 14 Apr 2021 06:59:48 +0200 [thread overview]
Message-ID: <YHZ2xCeo+aVgD28c@localhost.localdomain> (raw)
In-Reply-To: <94992151-03fc-dedd-3e09-811908d26d04@oracle.com>
On Tue, Apr 13, 2021 at 02:33:41PM -0700, Mike Kravetz wrote:
> > -static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
> > +/*
> > + * Must be called with the hugetlb lock held
> > + */
> > +static void __prep_account_new_huge_page(struct hstate *h, int nid)
> > +{
> > + h->nr_huge_pages++;
> > + h->nr_huge_pages_node[nid]++;
>
> I would prefer if we also move setting the destructor to this routine.
> set_compound_page_dtor(page, HUGETLB_PAGE_DTOR);
Uhm, but that is the routine that does the accounting, it feels wrong
here, plus...
>
> That way, PageHuge() will be false until it 'really' is a huge page.
> If not, we could potentially go into that retry loop in
> dissolve_free_huge_page or alloc_and_dissolve_huge_page in patch 5.
...I do not follow here, could you please elaborate some more?
Unless I am missing something, behaviour should not be any different with this
patch.
Thanks
--
Oscar Salvador
SUSE L3
next prev parent reply other threads:[~2021-04-14 4:59 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 10:47 [PATCH v7 0/7] Make alloc_contig_range handle Hugetlb pages Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 1/7] mm,page_alloc: Bail out earlier on -ENOMEM in alloc_contig_migrate_range Oscar Salvador
2021-04-13 17:00 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 2/7] mm,compaction: Let isolate_migratepages_{range,block} return error codes Oscar Salvador
2021-04-13 17:52 ` Mike Kravetz
2021-04-14 11:54 ` David Hildenbrand
2021-04-15 8:42 ` Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 3/7] mm,hugetlb: Clear HPageFreed outside of the lock Oscar Salvador
2021-04-13 13:23 ` Michal Hocko
2021-04-13 21:19 ` Mike Kravetz
2021-04-14 6:04 ` Michal Hocko
2021-04-14 7:41 ` Oscar Salvador
2021-04-14 8:28 ` Michal Hocko
2021-04-14 10:01 ` Oscar Salvador
2021-04-14 10:03 ` Oscar Salvador
2021-04-14 10:32 ` Michal Hocko
2021-04-14 10:49 ` Oscar Salvador
2021-04-14 11:09 ` Michal Hocko
2021-04-14 12:02 ` David Hildenbrand
2021-04-14 16:45 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 4/7] mm,hugetlb: Split prep_new_huge_page functionality Oscar Salvador
2021-04-13 13:24 ` Michal Hocko
2021-04-13 13:26 ` Michal Hocko
2021-04-13 21:33 ` Mike Kravetz
2021-04-14 4:59 ` Oscar Salvador [this message]
2021-04-14 12:15 ` David Hildenbrand
2021-04-14 17:03 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 5/7] mm: Make alloc_contig_range handle free hugetlb pages Oscar Salvador
2021-04-13 13:40 ` Michal Hocko
2021-04-15 8:29 ` Oscar Salvador
2021-04-13 22:29 ` Mike Kravetz
2021-04-14 4:54 ` Oscar Salvador
2021-04-14 12:26 ` David Hildenbrand
2021-04-15 8:28 ` Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 6/7] mm: Make alloc_contig_range handle in-use " Oscar Salvador
2021-04-13 22:48 ` Mike Kravetz
2021-04-14 4:52 ` Oscar Salvador
2021-04-14 17:07 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 7/7] mm,page_alloc: Drop unnecessary checks from pfn_range_valid_contig Oscar Salvador
2021-04-13 22:53 ` Mike Kravetz
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