From: "Huang, Ying" <ying.huang@intel.com>
To: Chris Li <chrisl@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Kairui Song <kasong@tencent.com>,
Ryan Roberts <ryan.roberts@arm.com>,
Kalesh Singh <kaleshsingh@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Barry Song <baohua@kernel.org>
Subject: Re: [PATCH v3 0/2] mm: swap: mTHP swap allocator base on swap cluster order
Date: Tue, 25 Jun 2024 10:43:28 +0800 [thread overview]
Message-ID: <874j9hzqr3.fsf@yhuang6-desk2.ccr.corp.intel.com> (raw)
In-Reply-To: <20240619-swap-allocator-v3-0-e973a3102444@kernel.org> (Chris Li's message of "Wed, 19 Jun 2024 02:20:28 -0700")
Chris Li <chrisl@kernel.org> writes:
> This is the short term solutiolns "swap cluster order" listed
> in my "Swap Abstraction" discussion slice 8 in the recent
> LSF/MM conference.
>
> When commit 845982eb264bc "mm: swap: allow storage of all mTHP
> orders" is introduced, it only allocates the mTHP swap entries
> from new empty cluster list. It has a fragmentation issue
> reported by Barry.
>
> https://lore.kernel.org/all/CAGsJ_4zAcJkuW016Cfi6wicRr8N9X+GJJhgMQdSMp+Ah+NSgNQ@mail.gmail.com/
>
> The reason is that all the empty cluster has been exhausted while
> there are planty of free swap entries to in the cluster that is
> not 100% free.
>
> Remember the swap allocation order in the cluster.
> Keep track of the per order non full cluster list for later allocation.
The "non full" is a kind of negative naming, can we use "partial" as
that used in "slub"?
[snip]
--
Best Regards,
Huang, Ying
prev parent reply other threads:[~2024-06-25 2:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-19 9:20 Chris Li
2024-06-19 9:20 ` [PATCH v3 1/2] mm: swap: swap cluster switch to double link list Chris Li
2024-06-21 2:59 ` Huang, Ying
2024-06-21 18:55 ` Chris Li
2024-06-24 10:16 ` Huang, Ying
2024-06-24 15:52 ` Chris Li
2024-06-19 9:20 ` [PATCH v3 2/2] mm: swap: mTHP allocate swap entries from nonfull list Chris Li
2024-06-19 9:31 ` [PATCH v3 0/2] mm: swap: mTHP swap allocator base on swap cluster order Ryan Roberts
2024-06-20 2:30 ` Huang, Ying
2024-06-21 8:43 ` Chris Li
2024-06-25 2:34 ` Huang, Ying
2024-07-26 6:46 ` Chris Li
2024-07-26 6:57 ` Huang, Ying
2024-07-26 7:22 ` Chris Li
2024-07-26 7:29 ` Huang, Ying
2024-06-25 2:43 ` Huang, Ying [this message]
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