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From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: "David Hildenbrand (Arm)" <david@kernel.org>,
	"Christian König" <christian.koenig@amd.com>,
	intel-xe@lists.freedesktop.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Lorenzo Stoakes <ljs@kernel.org>,
	 "Liam R. Howlett"	 <liam@infradead.org>,
	Vlastimil Babka <vbabka@kernel.org>,
	Mike Rapoport	 <rppt@kernel.org>,
	Suren Baghdasaryan <surenb@google.com>,
	Michal Hocko	 <mhocko@suse.com>, Hugh Dickins <hughd@google.com>,
	Baolin Wang	 <baolin.wang@linux.alibaba.com>,
	Brendan Jackman <jackmanb@google.com>,
	 Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
	Huang Rui <ray.huang@amd.com>,
	Matthew Auld	 <matthew.auld@intel.com>,
	Matthew Brost <matthew.brost@intel.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann	 <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>,
	Simona Vetter	 <simona@ffwll.ch>,
	dri-devel@lists.freedesktop.org, linux-mm@kvack.org,
	 linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm/shmem: add shmem_insert_folio()
Date: Wed, 13 May 2026 16:53:11 +0200	[thread overview]
Message-ID: <d5e310c7f4506ef373c705180b33b9d5b2645b1a.camel@linux.intel.com> (raw)
In-Reply-To: <d7cc273b-17a2-4b5f-af6a-0dc708c8cabf@kernel.org>

On Wed, 2026-05-13 at 13:36 +0200, David Hildenbrand (Arm) wrote:
> On 5/13/26 12:37, Thomas Hellström wrote:
> 
> 
> > 
[...]
> > One alternative would be a single large sparse shmem object common
> > for
> > all DRM objects, with a range allocator, but that also got pretty
> > ugly
> > when I tried to implement that.
> 
> Does not sound too crazy, though.
> 
> > 

Yeah, I stumbled on finding a reasonable idea to connect a shmem folio
to the pool LRUs and the range allocator metadata.

Assuming a shmem folio is pinned using the memfd pinning interface,
would folio->private be temporarily available?

Thanks,
Thomas

  reply	other threads:[~2026-05-13 14:53 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-12 11:03 [PATCH 0/2] Insert instead of copy pages into shmem when shrinking Thomas Hellström
2026-05-12 11:03 ` [PATCH 1/2] mm/shmem: add shmem_insert_folio() Thomas Hellström
2026-05-12 11:07   ` David Hildenbrand (Arm)
2026-05-12 11:31     ` Thomas Hellström
2026-05-12 20:03       ` David Hildenbrand (Arm)
2026-05-13  7:47         ` Christian König
2026-05-13  8:31           ` Thomas Hellström
2026-05-13  9:30             ` David Hildenbrand (Arm)
2026-05-13  8:37           ` David Hildenbrand (Arm)
2026-05-13  8:51             ` Thomas Hellström
2026-05-13 10:03               ` David Hildenbrand (Arm)
2026-05-13 10:37                 ` Thomas Hellström
2026-05-13 11:36                   ` David Hildenbrand (Arm)
2026-05-13 14:53                     ` Thomas Hellström [this message]
2026-05-13 19:35                       ` David Hildenbrand (Arm)
2026-05-14 10:40                         ` Thomas Hellström
2026-05-13 11:54             ` Christian König
2026-05-13 19:43               ` David Hildenbrand (Arm)
2026-05-12 11:03 ` [PATCH 2/2] drm/ttm: Use ttm_backup_insert_folio() for zero-copy swapout Thomas Hellström
2026-05-12 16:46 ` ✗ CI.checkpatch: warning for Insert instead of copy pages into shmem when shrinking Patchwork
2026-05-12 16:47 ` ✓ CI.KUnit: success " Patchwork
2026-05-12 18:11 ` ✓ Xe.CI.BAT: " Patchwork
2026-05-13  7:30 ` ✗ Xe.CI.FULL: failure " Patchwork

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