From: Matthew Wilcox <willy@infradead.org>
To: Vlastimil Babka <vbabka@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@gentwo.org>,
David Rientjes <rientjes@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Harry Yoo <harry.yoo@oracle.com>,
linux-mm@kvack.org
Subject: Re: [PATCH 00/22] Prepare slab for memdescs
Date: Fri, 29 Aug 2025 18:05:22 +0100 [thread overview]
Message-ID: <aLHd0rvwawctlHzH@casper.infradead.org> (raw)
In-Reply-To: <20250829154728.3397606-1-willy@infradead.org>
On Fri, Aug 29, 2025 at 04:47:04PM +0100, Matthew Wilcox (Oracle) wrote:
> When we separate struct folio, struct page and struct slab from each
> other, converting to folios then to slabs will be nonsense. It made
> sense under the 'folio is just a head page' interpretation, but with
> full separation, page_folio() will return NULL for a page which belongs
> to a slab.
>
> This patch series removes almost all mentions of folio from slab.
> There are a few folio_test_slab() invocations left around the tree that
> I haven't decided how to handle yet. We're not yet quite at the point
> of separately allocating struct slab, but that's what I'll be working
> on next.
>
> Based on next-20250829. It has dependencies on both the memdesc_flags_t
> conversion and the sheaves work. Both should be trivial to resolve,
> but it may be a little awkward to shepherd into Linus' tree.
Email is being ridiculously slow today. You can find all these patches
at
https://git.infradead.org/?p=users/willy/pagecache.git;a=shortlog;h=refs/heads/slab-future
or
git://git.infradead.org/users/willy/pagecache.git refs/heads/slab-future
I'll wait a few more hours and resend the ones that don't make it to
the archive.
prev parent reply other threads:[~2025-08-29 17:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-29 15:47 [PATCH 00/22] Prepare slab for memdescs Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 01/22] slab: Remove unnecessary test from alloc_debug_processing() Matthew Wilcox (Oracle)
2025-09-10 10:53 ` Harry Yoo
2025-08-29 15:47 ` [PATCH 02/22] slab: Remove unnecessary test from alloc_single_from_partial() Matthew Wilcox (Oracle)
2025-09-10 10:56 ` Harry Yoo
2025-08-29 15:47 ` [PATCH 03/22] slab: Remove dead code in check_slab() Matthew Wilcox (Oracle)
2025-09-10 11:21 ` Harry Yoo
2025-09-10 11:39 ` Matthew Wilcox
2025-09-10 21:12 ` Vlastimil Babka
2025-09-10 22:11 ` Christoph Lameter (Ampere)
2025-09-11 9:05 ` Harry Yoo
2025-08-29 15:47 ` [PATCH 04/22] slab: Remove dead code in free_consistency_checks() Matthew Wilcox (Oracle)
2025-09-10 11:07 ` Harry Yoo
2025-08-29 15:47 ` [PATCH 05/22] mm: Constify compound_order() and page_size() Matthew Wilcox (Oracle)
2025-08-29 20:42 ` Zi Yan
2025-08-29 22:53 ` Matthew Wilcox
2025-08-31 1:06 ` Zi Yan
2025-09-01 15:45 ` David Hildenbrand
2025-08-29 15:47 ` [PATCH 06/22] slab: Reimplement page_slab() Matthew Wilcox (Oracle)
2025-09-01 15:50 ` David Hildenbrand
2025-08-29 15:47 ` [PATCH 07/22] slab: Remove folio references from __ksize() Matthew Wilcox (Oracle)
2025-09-03 5:23 ` Matthew Wilcox
2025-09-10 11:42 ` Matthew Wilcox
2025-08-29 15:47 ` [PATCH 08/22] slab: Remove folio references in memcg_slab_post_charge() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 09/22] slab: Remove folio references in slab alloc/free Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 10/22] slab: Remove folio references from ___kmalloc_large_node() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 11/22] slab: Remove folio references from free_large_kmalloc() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 12/22] slab: Remove folio references from kvfree_rcu_cb() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 13/22] slab: Remove folio references from kvfree() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 14/22] slab: Remove folio references from __do_krealloc() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 15/22] slab: Remove folio references from build_detached_freelist() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 16/22] slab: Remove dead code from free_large_kmalloc() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 17/22] slab: Remove folio references from kfree_rcu_sheaf() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 18/22] usercopy: Remove folio references from check_heap_object() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 19/22] memcg: Convert mem_cgroup_from_obj_folio() to mem_cgroup_from_obj_slab() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 20/22] kasan: Remove references to folio in __kasan_mempool_poison_object() Matthew Wilcox (Oracle)
2025-09-01 15:47 ` David Hildenbrand
2025-08-29 15:47 ` [PATCH 21/22] slab: Remove references to folios from virt_to_slab() Matthew Wilcox (Oracle)
2025-08-29 15:47 ` [PATCH 22/22] mm: Remove redundant test in validate_page_before_insert() Matthew Wilcox (Oracle)
2025-09-01 15:46 ` David Hildenbrand
2025-08-29 17:05 ` Matthew Wilcox [this message]
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