From: Matthew Wilcox <willy@infradead.org>
To: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org, songmuchun@bytedance.com,
mike.kravetz@oracle.com, tsahu@linux.ibm.com,
jhubbard@nvidia.com
Subject: Re: [PATCH mm-unstable 3/8] mm/hugetlb: convert dequeue_hugetlb_page_node functions to folios
Date: Tue, 3 Jan 2023 21:00:12 +0000 [thread overview]
Message-ID: <Y7SXXF4sGEjR1um5@casper.infradead.org> (raw)
In-Reply-To: <20230103191340.116536-4-sidhartha.kumar@oracle.com>
On Tue, Jan 03, 2023 at 01:13:35PM -0600, Sidhartha Kumar wrote:
> +static struct folio *dequeue_hugetlb_folio_node_exact(struct hstate *h,
> + int nid)
> {
> struct page *page;
> + struct folio *folio;
> bool pin = !!(current->flags & PF_MEMALLOC_PIN);
>
> lockdep_assert_held(&hugetlb_lock);
> list_for_each_entry(page, &h->hugepage_freelists[nid], lru) {
> - if (pin && !is_longterm_pinnable_page(page))
> + folio = page_folio(page);
I'd argue that you can pull folios directly off the hugepage_freelists.
Since they're attached through the 'lru', you know they're not tail
pages, because lru.prev aliases with compound_head.
The rest looks good.
next prev parent reply other threads:[~2023-01-03 21:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-03 19:13 [PATCH mm-unstable 0/9] continue hugetlb folio conversions Sidhartha Kumar
2023-01-03 19:13 ` [PATCH mm-unstable 1/8] mm/hugetlb: convert isolate_hugetlb to folios Sidhartha Kumar
2023-01-03 20:56 ` Matthew Wilcox
2023-01-06 23:04 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 2/8] mm/hugetlb: convert __update_and_free_page() " Sidhartha Kumar
2023-01-06 23:46 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 3/8] mm/hugetlb: convert dequeue_hugetlb_page_node functions " Sidhartha Kumar
2023-01-03 21:00 ` Matthew Wilcox [this message]
2023-01-06 23:57 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 4/8] mm/hugetlb: convert alloc_surplus_huge_page() " Sidhartha Kumar
2023-01-07 0:15 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 5/8] mm/hugetlb: increase use of folios in alloc_huge_page() Sidhartha Kumar
2023-01-07 0:30 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 6/8] mm/hugetlb: convert alloc_migrate_huge_page to folios Sidhartha Kumar
2023-01-07 0:54 ` Mike Kravetz
2023-01-09 16:26 ` Sidhartha Kumar
2023-01-09 18:21 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 7/8] mm/hugetlb: convert restore_reserve_on_error() " Sidhartha Kumar
2023-01-07 0:57 ` Mike Kravetz
2023-01-03 19:13 ` [PATCH mm-unstable 8/8] mm/hugetlb: convert demote_free_huge_page " Sidhartha Kumar
2023-01-07 1:11 ` Mike Kravetz
2023-01-07 1:31 ` Matthew Wilcox
2023-01-07 20:55 ` Mike Kravetz
2023-01-09 16:36 ` Sidhartha Kumar
2023-01-09 18:23 ` Mike Kravetz
2023-01-09 20:01 ` John Hubbard
2023-01-09 20:53 ` Sidhartha Kumar
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