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From: Christopher Lameter <cl@linux.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-mm@kvack.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Matthew Wilcox <mawilcox@microsoft.com>
Subject: Re: [PATCH 7/8] mm: Document how to use struct page
Date: Tue, 19 Dec 2017 09:53:16 -0600 (CST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1712190952470.16727@nuc-kabylake> (raw)
In-Reply-To: <20171216164425.8703-8-willy@infradead.org>

On Sat, 16 Dec 2017, Matthew Wilcox wrote:

> + * If you allocate pages of order > 0, you can use the fields in the struct
> + * page associated with each page, but bear in mind that the pages may have
> + * been inserted individually into the page cache, so you must use the above
> + * three fields in a compatible way for each struct page.

If they are inserted into the page cache then also other fields are
required like the lru one right?

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  parent reply	other threads:[~2017-12-19 15:53 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-16 16:44 [PATCH 0/8] Restructure struct page Matthew Wilcox
2017-12-16 16:44 ` [PATCH 1/8] mm: Align struct page more aesthetically Matthew Wilcox
2017-12-18 15:22   ` Michal Hocko
2017-12-19 14:58   ` Christopher Lameter
2017-12-16 16:44 ` [PATCH 2/8] mm: De-indent struct page Matthew Wilcox
2017-12-18 15:36   ` Michal Hocko
2017-12-18 16:19     ` Matthew Wilcox
2017-12-18 20:49       ` Michal Hocko
2017-12-18 21:44         ` Matthew Wilcox
2017-12-19 14:59           ` Christopher Lameter
2017-12-16 16:44 ` [PATCH 3/8] mm: Remove misleading alignment claims Matthew Wilcox
2017-12-19 15:01   ` Christopher Lameter
2017-12-16 16:44 ` [PATCH 4/8] mm: Improve comment on page->mapping Matthew Wilcox
2017-12-19  8:02   ` Michal Hocko
2017-12-19 15:48     ` Christopher Lameter
2017-12-16 16:44 ` [PATCH 5/8] mm: Introduce _slub_counter_t Matthew Wilcox
2017-12-19  8:07   ` Michal Hocko
2017-12-19 12:46     ` Matthew Wilcox
2017-12-19 13:01       ` Michal Hocko
2017-12-20 16:19         ` Matthew Wilcox
2017-12-21 17:03           ` Christopher Lameter
2017-12-16 16:44 ` [PATCH 6/8] mm: Store compound_dtor / compound_order as bytes Matthew Wilcox
2017-12-19  8:19   ` Michal Hocko
2017-12-19 12:49     ` Matthew Wilcox
2017-12-16 16:44 ` [PATCH 7/8] mm: Document how to use struct page Matthew Wilcox
2017-12-16 17:47   ` Randy Dunlap
2017-12-17  1:15     ` Matthew Wilcox
2017-12-19  9:59   ` Michal Hocko
2017-12-19 13:07     ` Matthew Wilcox
2017-12-19 13:43       ` Kirill A. Shutemov
2017-12-19 13:48         ` Michal Hocko
2017-12-19 15:53   ` Christopher Lameter [this message]
2017-12-19 15:56     ` Kirill A. Shutemov
2017-12-19 16:12     ` Matthew Wilcox
2017-12-16 16:44 ` [PATCH 8/8] mm: Remove reference to PG_buddy Matthew Wilcox
2017-12-19 10:02   ` Michal Hocko
2017-12-19 15:53     ` Christopher Lameter
2017-12-17 13:06 ` [PATCH 0/8] Restructure struct page Kirill A. Shutemov
2017-12-20 15:52 Matthew Wilcox
2017-12-20 15:52 ` [PATCH 7/8] mm: Document how to use " Matthew Wilcox

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