From: Hugh Dickins <hughd@google.com>
To: Zi Yan <ziy@nvidia.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
"Yang Shi" <shy828301@gmail.com>, "Yu Zhao" <yuzhao@google.com>,
linux-mm@kvack.org,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
"Ryan Roberts" <ryan.roberts@arm.com>,
"Michal Koutný" <mkoutny@suse.com>,
"Roman Gushchin" <roman.gushchin@linux.dev>,
"Zach O'Keefe" <zokeefe@google.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v3 6/7] mm: truncate: split huge page cache page to a non-zero order if possible.
Date: Sun, 16 Apr 2023 12:51:46 -0700 (PDT) [thread overview]
Message-ID: <86864d6c-39d3-d26f-278f-b96e14884541@google.com> (raw)
In-Reply-To: <9dd96da-efa2-5123-20d4-4992136ef3ad@google.com>
> As this code stands, truncate a 2M huge page at 1M and you get two 1M
> pieces (one then discarded) - nice; but truncate it at 1M+1 and you get
> lots of order 2 (forced up from 1) pieces. Seems weird, and not worth
> the effort.
I've probably said that wrong: truncate at 1M+1 and you'd get lots of
order 0 pieces.
Hugh
next prev parent reply other threads:[~2023-04-16 19:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-03 20:18 [PATCH v3 0/7] Split a folio to any lower order folios Zi Yan
2023-04-03 20:18 ` [PATCH v3 1/7] mm/memcg: use order instead of nr in split_page_memcg() Zi Yan
2023-04-03 20:18 ` [PATCH v3 2/7] mm/page_owner: use order instead of nr in split_page_owner() Zi Yan
2023-04-03 20:18 ` [PATCH v3 3/7] mm: memcg: make memcg huge page split support any order split Zi Yan
2023-04-03 20:18 ` [PATCH v3 4/7] mm: page_owner: add support for splitting to any order in split page_owner Zi Yan
2023-04-03 20:18 ` [PATCH v3 5/7] mm: thp: split huge page to any lower order pages Zi Yan
2023-04-16 19:25 ` Hugh Dickins
2023-04-17 14:49 ` Zi Yan
2023-04-03 20:18 ` [PATCH v3 6/7] mm: truncate: split huge page cache page to a non-zero order if possible Zi Yan
2023-04-16 19:44 ` Hugh Dickins
2023-04-16 19:51 ` Hugh Dickins [this message]
2023-04-17 15:20 ` Zi Yan
2023-04-18 1:05 ` Hugh Dickins
2023-04-03 20:18 ` [PATCH v3 7/7] mm: huge_memory: enable debugfs to split huge pages to any order Zi Yan
2023-04-04 21:47 ` [PATCH v3 0/7] Split a folio to any lower order folios Andrew Morton
2023-04-16 18:11 ` Hugh Dickins
2023-04-16 18:45 ` Andrew Morton
2023-04-17 14:20 ` David Hildenbrand
2023-04-17 19:26 ` Zi Yan
2023-04-18 10:29 ` David Hildenbrand
2023-04-18 14:00 ` Zi Yan
2024-02-13 12:30 ` Pankaj Raghav (Samsung)
2024-02-13 13:46 ` Zi Yan
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