From: Breno Leitao <leitao@debian.org>
To: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Nico Pache <npache@redhat.com>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>,
Lance Yang <lance.yang@linux.dev>,
Vlastimil Babka <vbabka@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
usamaarif642@gmail.com, kas@kernel.org, kernel-team@meta.com
Subject: Re: [PATCH v2 2/3] mm: huge_memory: refactor anon_enabled_store() with change_anon_orders()
Date: Fri, 6 Mar 2026 08:43:45 -0800 [thread overview]
Message-ID: <aasAU-7yRunywKmt@gmail.com> (raw)
In-Reply-To: <68156cf9-cf97-4435-b979-c2ab0d6a97b1@lucifer.local>
On Fri, Mar 06, 2026 at 11:32:44AM +0000, Lorenzo Stoakes (Oracle) wrote:
> On Thu, Mar 05, 2026 at 06:04:54AM -0800, Breno Leitao wrote:
> > Signed-off-by: Breno Leitao <leitao@debian.org>
>
> This is nice, you've improved my idea :)
Thanks! Your idea was a good starting point, and digging deeper led me to
sysfs_match_string(), which I wasn't familiar with before — it turned out to
be exactly what we needed here.
Having the modes in anon_enabled_mode_strings[] also opens the door to further
simplification. I haven't thought it through completely yet, but I suspect we
could consolidate quite a few of the _store()/_show() helpers as a follow-up.
> I know you change another instance of this in 3/3, but I wonder if there are
> other cases like this in the THP code we can fixup too?
Yes, there are several other candidates — defrag_store, the ones Baolin Wang
reported, shmem_enabled_store(), and thpsize_shmem_enabled_store() among them.
I'd prefer to address those in a separate patch series once this one lands,
if that works for everyone.
next prev parent reply other threads:[~2026-03-06 16:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-05 14:04 [PATCH v2 0/3] mm: thp: reduce unnecessary start_stop_khugepaged() calls Breno Leitao
2026-03-05 14:04 ` [PATCH v2 1/3] mm: khugepaged: export set_recommended_min_free_kbytes() Breno Leitao
2026-03-06 11:20 ` Lorenzo Stoakes (Oracle)
2026-03-06 11:33 ` Lorenzo Stoakes (Oracle)
2026-03-05 14:04 ` [PATCH v2 2/3] mm: huge_memory: refactor anon_enabled_store() with change_anon_orders() Breno Leitao
2026-03-06 6:07 ` Baolin Wang
2026-03-06 10:30 ` Breno Leitao
2026-03-06 11:22 ` Lorenzo Stoakes (Oracle)
2026-03-06 11:32 ` Lorenzo Stoakes (Oracle)
2026-03-06 16:43 ` Breno Leitao [this message]
2026-03-05 14:04 ` [PATCH v2 3/3] mm: huge_memory: refactor enabled_store() with change_enabled() Breno Leitao
2026-03-06 11:39 ` Lorenzo Stoakes (Oracle)
2026-03-06 15:56 ` Breno Leitao
2026-03-06 6:14 ` [PATCH v2 0/3] mm: thp: reduce unnecessary start_stop_khugepaged() calls Baolin Wang
2026-03-06 10:26 ` Breno Leitao
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