From: Matthew Wilcox <willy@infradead.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: "Christoph Lameter (Ampere)" <cl@gentwo.org>,
Andrew Morton <akpm@linux-foundation.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 v2 06/22] slab: Reimplement page_slab()
Date: Thu, 11 Sep 2025 12:35:50 +0100 [thread overview]
Message-ID: <aMK0FuWwVJmC-Nht@casper.infradead.org> (raw)
In-Reply-To: <08e7cac0-704e-48c4-ba13-c857dc1d11f0@suse.cz>
On Thu, Sep 11, 2025 at 09:10:48AM +0200, Vlastimil Babka wrote:
> I guess later with memdescs we can have a scheme where all head and tail
> memdescs could contain the struct slab pointer so we don't have go through
> the head one first? Which would replace one indirection with another and not
> add a new one either.
Yes, that's how memdescs work. All pages contain the same memdesc value
so there's no distinction between a head and tail page.
next prev parent reply other threads:[~2025-09-11 11:35 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-10 11:54 [PATCH v2 00/22] Prepare slab for memdescs Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 01/22] slab: Remove unnecessary test from alloc_debug_processing() Matthew Wilcox (Oracle)
2025-09-10 22:19 ` Christoph Lameter (Ampere)
2025-09-10 11:54 ` [PATCH v2 02/22] slab: Remove unnecessary test from alloc_single_from_partial() Matthew Wilcox (Oracle)
2025-09-10 22:23 ` Christoph Lameter (Ampere)
2025-09-11 16:38 ` Vlastimil Babka
2025-09-10 11:54 ` [PATCH v2 03/22] slab: Remove dead code in check_slab() Matthew Wilcox (Oracle)
2025-09-10 22:27 ` Christoph Lameter (Ampere)
2025-09-10 11:54 ` [PATCH v2 04/22] slab: Remove dead code in free_consistency_checks() Matthew Wilcox (Oracle)
2025-09-10 22:30 ` Christoph Lameter (Ampere)
2025-09-11 15:29 ` Vlastimil Babka
2025-09-10 11:54 ` [PATCH v2 05/22] mm: Constify compound_order() and page_size() Matthew Wilcox (Oracle)
2025-09-10 14:01 ` Vlastimil Babka
2025-09-10 17:33 ` Christoph Lameter (Ampere)
2025-09-10 11:54 ` [PATCH v2 06/22] slab: Reimplement page_slab() Matthew Wilcox (Oracle)
2025-09-10 22:46 ` Christoph Lameter (Ampere)
2025-09-10 23:01 ` Matthew Wilcox
2025-09-10 23:14 ` Christoph Lameter (Ampere)
2025-09-11 7:10 ` Vlastimil Babka
2025-09-11 11:35 ` Matthew Wilcox [this message]
2025-09-10 11:54 ` [PATCH v2 07/22] slab: Remove folio references from __ksize() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 08/22] slab: Remove folio references in memcg_slab_post_charge() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 09/22] slab: Remove folio references in slab alloc/free Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 10/22] slab: Remove folio references from ___kmalloc_large_node() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 11/22] slab: Remove folio references from free_large_kmalloc() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 12/22] slab: Remove folio references from kvfree_rcu_cb() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 13/22] slab: Remove folio references from kvfree() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 14/22] slab: Remove folio references from __do_krealloc() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 15/22] slab: Remove folio references from build_detached_freelist() Matthew Wilcox (Oracle)
2025-09-10 11:54 ` [PATCH v2 16/22] slab: Remove dead code from free_large_kmalloc() Matthew Wilcox (Oracle)
2025-09-10 22:45 ` Christoph Lameter (Ampere)
2025-09-10 11:54 ` [PATCH v2 17/22] slab: Remove folio references from kfree_rcu_sheaf() Matthew Wilcox (Oracle)
2025-09-10 11:55 ` [PATCH v2 18/22] usercopy: Remove folio references from check_heap_object() Matthew Wilcox (Oracle)
2025-09-10 11:55 ` [PATCH v2 19/22] memcg: Convert mem_cgroup_from_obj_folio() to mem_cgroup_from_obj_slab() Matthew Wilcox (Oracle)
2025-09-10 11:55 ` [PATCH v2 20/22] kasan: Remove references to folio in __kasan_mempool_poison_object() Matthew Wilcox (Oracle)
2025-09-10 11:55 ` [PATCH v2 21/22] slab: Remove references to folios from virt_to_slab() Matthew Wilcox (Oracle)
2025-09-10 11:55 ` [PATCH v2 22/22] mm: Remove redundant test in validate_page_before_insert() Matthew Wilcox (Oracle)
2025-09-10 14:02 ` Vlastimil Babka
2025-09-10 14:05 ` [PATCH v2 00/22] Prepare slab for memdescs Vlastimil Babka
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