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From: Zi Yan <ziy@nvidia.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: <linux-fsdevel@vger.kernel.org>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 02/25] mm: Add folio_pgdat
Date: Mon, 1 Mar 2021 16:05:49 -0500	[thread overview]
Message-ID: <4140A4A3-05E7-4A13-BB81-2AE4E0FDC34A@nvidia.com> (raw)
In-Reply-To: <20210128070404.1922318-3-willy@infradead.org>

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On 28 Jan 2021, at 2:03, Matthew Wilcox (Oracle) wrote:

> This is just a convenience wrapper for callers with folios; pgdat can
> be reached from tail pages as well as head pages.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> ---
>  include/linux/mm.h | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index f20504017adf..7d787229dd40 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1503,6 +1503,11 @@ static inline pg_data_t *page_pgdat(const struct page *page)
>  	return NODE_DATA(page_to_nid(page));
>  }
>
> +static inline pg_data_t *folio_pgdat(const struct folio *folio)
> +{
> +	return page_pgdat(&folio->page);
> +}
> +
>  #ifdef SECTION_IN_PAGE_FLAGS
>  static inline void set_page_section(struct page *page, unsigned long section)
>  {
> -- 
> 2.29.2

LGTM.

Reviewed-by: Zi Yan <ziy@nvidia.com>

—
Best Regards,
Yan Zi

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  reply	other threads:[~2021-03-02  7:09 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-28  7:03 [PATCH v3 00/25] Page folios Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 01/25] mm: Introduce struct folio Matthew Wilcox (Oracle)
2021-03-01 20:26   ` Zi Yan
2021-03-01 20:53     ` Matthew Wilcox
2021-03-01 21:03       ` Zi Yan
2021-03-02 13:22     ` Matthew Wilcox
2021-03-02 17:47       ` Zi Yan
2021-01-28  7:03 ` [PATCH v3 02/25] mm: Add folio_pgdat Matthew Wilcox (Oracle)
2021-03-01 21:05   ` Zi Yan [this message]
2021-01-28  7:03 ` [PATCH v3 03/25] mm/vmstat: Add folio stat wrappers Matthew Wilcox (Oracle)
2021-03-01 21:17   ` Zi Yan
2021-03-01 22:15     ` Matthew Wilcox
2021-01-28  7:03 ` [PATCH v3 04/25] mm/debug: Add VM_BUG_ON_FOLIO and VM_WARN_ON_ONCE_FOLIO Matthew Wilcox (Oracle)
2021-03-01 21:25   ` Zi Yan
2021-01-28  7:03 ` [PATCH v3 05/25] mm: Add put_folio Matthew Wilcox (Oracle)
2021-03-01 21:41   ` Zi Yan
2021-01-28  7:03 ` [PATCH v3 06/25] mm: Add get_folio Matthew Wilcox (Oracle)
2021-03-01 21:45   ` Zi Yan
2021-01-28  7:03 ` [PATCH v3 07/25] mm: Create FolioFlags Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 08/25] mm: Handle per-folio private data Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 09/25] mm: Add folio_index, folio_page and folio_contains Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 10/25] mm/util: Add folio_mapping and folio_file_mapping Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 11/25] mm/memcg: Add folio_memcg, lock_folio_memcg and unlock_folio_memcg Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 12/25] mm/memcg: Add mem_cgroup_folio_lruvec Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 13/25] mm: Add unlock_folio Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 14/25] mm: Add lock_folio Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 15/25] mm: Add lock_folio_killable Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 16/25] mm: Convert lock_page_async to lock_folio_async Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 17/25] mm/filemap: Convert end_page_writeback to end_folio_writeback Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 18/25] mm: Convert wait_on_page_bit to wait_on_folio_bit Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 19/25] mm: Add wait_for_stable_folio and wait_on_folio_writeback Matthew Wilcox (Oracle)
2021-01-28  7:03 ` [PATCH v3 20/25] mm: Add wait_on_folio_locked & wait_on_folio_locked_killable Matthew Wilcox (Oracle)
2021-01-28  7:04 ` [PATCH v3 21/25] mm: Convert lock_page_or_retry to lock_folio_or_retry Matthew Wilcox (Oracle)
2021-01-28  7:04 ` [PATCH v3 22/25] mm/filemap: Convert wake_up_page_bit to wake_up_folio_bit Matthew Wilcox (Oracle)
2021-01-28  7:04 ` [PATCH v3 23/25] mm: Convert test_clear_page_writeback to test_clear_folio_writeback Matthew Wilcox (Oracle)
2021-01-28  7:04 ` [PATCH v3 24/25] mm/filemap: Convert page wait queues to be folios Matthew Wilcox (Oracle)
2021-01-28  7:04 ` [PATCH v3 25/25] cachefiles: Switch to wait_page_key Matthew Wilcox (Oracle)

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