From: Christoph Hellwig <hch@infradead.org>
To: Suren Baghdasaryan <surenb@google.com>
Cc: akpm@linux-foundation.org, willy@infradead.org, david@redhat.com,
vbabka@suse.cz, lorenzo.stoakes@oracle.com,
liam.howlett@oracle.com, alexandru.elisei@arm.com,
peterx@redhat.com, hannes@cmpxchg.org, mhocko@kernel.org,
m.szyprowski@samsung.com, iamjoonsoo.kim@lge.com,
mina86@mina86.com, axboe@kernel.dk, viro@zeniv.linux.org.uk,
brauner@kernel.org, hch@infradead.org, jack@suse.cz,
hbathini@linux.ibm.com, sourabhjain@linux.ibm.com,
ritesh.list@gmail.com, aneesh.kumar@kernel.org,
bhelgaas@google.com, sj@kernel.org, fvdl@google.com,
ziy@nvidia.com, yuzhao@google.com, minchan@kernel.org,
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linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
Minchan Kim <minchan@google.com>
Subject: Re: [RFC 2/3] mm: introduce GCMA
Date: Thu, 20 Mar 2025 22:14:43 -0700 [thread overview]
Message-ID: <Z9z1w2vHfJrwSgWW@infradead.org> (raw)
In-Reply-To: <20250320173931.1583800-3-surenb@google.com>
On Thu, Mar 20, 2025 at 10:39:30AM -0700, Suren Baghdasaryan wrote:
> From: Minchan Kim <minchan@google.com>
>
> This patch introduces GCMA (Guaranteed Contiguous Memory Allocator)
> cleacache backend which reserves some amount of memory at the boot
> and then donates it to store clean file-backed pages in the cleancache.
> GCMA aims to guarantee contiguous memory allocation success as well as
> low and deterministic allocation latency.
>
> Notes:
> Originally, the idea was posted by SeongJae Park and Minchan Kim [1].
> Later Minchan reworked it to be used in Android as a reference for
> Android vendors to use [2].
That is not a very good summay. It needs to explain how you ensure
that the pages do stay clean forever.
next prev parent reply other threads:[~2025-03-21 5:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-20 17:39 [RFC 0/3] Guaranteed CMA Suren Baghdasaryan
2025-03-20 17:39 ` [RFC 1/3] mm: implement cleancache Suren Baghdasaryan
2025-03-21 5:13 ` Christoph Hellwig
2025-03-21 16:03 ` Suren Baghdasaryan
2025-03-20 17:39 ` [RFC 2/3] mm: introduce GCMA Suren Baghdasaryan
2025-03-21 5:14 ` Christoph Hellwig [this message]
2025-03-21 16:13 ` Suren Baghdasaryan
2025-03-20 17:39 ` [RFC 3/3] mm: integrate GCMA with CMA using dt-bindings Suren Baghdasaryan
2025-03-21 14:05 ` Conor Dooley
2025-03-21 16:14 ` Suren Baghdasaryan
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