From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
To: Pedro Falcato <pfalcato@suse.de>
Cc: "David Hildenbrand" <david@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>,
"David Rientjes" <rientjes@google.com>,
"Shakeel Butt" <shakeel.butt@linux.dev>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Jann Horn" <jannh@google.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
"Jan Kara" <jack@suse.cz>, "Nhat Pham" <nphamcs@gmail.com>,
"Johannes Weiner" <hannes@cmpxchg.org>, "Zi Yan" <ziy@nvidia.com>,
"Matthew Brost" <matthew.brost@intel.com>,
"Joshua Hahn" <joshua.hahnjy@gmail.com>,
"Byungchul Park" <byungchul@sk.com>,
"Gregory Price" <gourry@gourry.net>,
"Ying Huang" <ying.huang@linux.alibaba.com>,
"Alistair Popple" <apopple@nvidia.com>,
"Usama Arif" <usama.arif@linux.dev>,
"Kairui Song" <kasong@tencent.com>,
"Balbir Singh" <balbirs@nvidia.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Kiryl Shutsemau" <kas@kernel.org>,
"Yu-cheng Yu" <yu-cheng.yu@intel.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Dennis Zhou" <dennis@kernel.org>, "Tejun Heo" <tj@kernel.org>,
"Christoph Lameter" <cl@gentwo.org>,
"Peng Fan" <peng.fan@nxp.com>, "Josef Bacik" <jbacik@fb.com>,
"Chris Mason" <mason@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org,
"Borislav Petkov (AMD)" <bp@alien8.de>,
"Mark Brown" <broonie@kernel.org>,
"Dennis Zhou (Facebook)" <dennisszhou@gmail.com>,
"Rick Edgecombe" <rick.p.edgecombe@intel.com>,
stable@vger.kernel.org
Subject: Re: [PATCH 01/13] mm/mmap: free gathered pages before MMF_OOM_SKIP
Date: Thu, 12 Nov 2026 12:18:46 +0000 [thread overview]
Message-ID: <avWunRPQJQctsvYl@gremlin> (raw)
In-Reply-To: <avWtxdIHSJJ_uNwG@gremlin>
On Thu, Nov 12, 2026 at 12:17:21PM +0000, Lorenzo Stoakes (ARM) wrote:
> On Thu, Nov 12, 2026 at 11:21:38AM +0000, Pedro Falcato wrote:
> > Reviewed-by: Pedro Falcato <pfalcato@suse.de>
>
> Thanks!
>
> > > diff --git a/mm/mmap.c b/mm/mmap.c
> > > index 7618e72766a5..4cb18b217048 100644
> > > --- a/mm/mmap.c
> > > +++ b/mm/mmap.c
> > > @@ -1313,11 +1313,18 @@ void exit_mmap(struct mm_struct *mm)
> [ ... ]
> > > + if (mm_is_oom_victim(mm))
> > > + tlb_flush_mmu(&tlb);
> >
> > I see there's a different tlb_flush_mmu() call below (in the actual function).
> > Is tlb_flush_mmu() idempotent?
>
> No, tlb_flush_mmu() is cromulent.
(kidding, yes it's idempotent :P)
--
Cheers, Lorenzo
next prev parent reply other threads:[~2026-11-12 12:19 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-11 18:13 [PATCH 00/13] mm: batch of (urgentish?) fixes in oomk, cachestat, dev-migrate, percpu Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 01/13] mm/mmap: free gathered pages before MMF_OOM_SKIP Lorenzo Stoakes (ARM)
2026-11-11 22:49 ` Usama Arif
2026-11-12 12:18 ` Lorenzo Stoakes (ARM)
2026-11-12 11:21 ` Pedro Falcato
2026-11-12 12:17 ` Lorenzo Stoakes (ARM)
2026-11-12 12:18 ` Lorenzo Stoakes (ARM) [this message]
2026-11-12 12:28 ` Pedro Falcato
2026-11-12 12:33 ` Lorenzo Stoakes (ARM)
2026-11-12 11:43 ` Michal Hocko
2026-11-12 12:14 ` Lorenzo Stoakes (ARM)
2026-11-12 12:48 ` Michal Hocko
2026-11-11 18:13 ` [PATCH 02/13] mm: cachestat: count each page only once Lorenzo Stoakes (ARM)
2026-11-11 23:26 ` Usama Arif
2026-11-12 11:27 ` Pedro Falcato
2026-11-11 18:13 ` [PATCH 03/13] mm: cachestat: restart the walk after each entry Lorenzo Stoakes (ARM)
2026-11-11 23:38 ` Usama Arif
2026-11-12 12:22 ` Lorenzo Stoakes (ARM)
2026-11-12 11:29 ` Pedro Falcato
2026-11-12 12:33 ` Nhat Pham
2026-11-11 18:13 ` [PATCH 04/13] mm/migrate_device: allocate THP deferred split heads Lorenzo Stoakes (ARM)
2026-11-11 19:30 ` Kiryl Shutsemau
2026-11-11 19:40 ` David Hildenbrand (Arm)
2026-11-11 22:18 ` Andrew Morton
2026-11-11 23:02 ` Balbir Singh
2026-11-11 18:13 ` [PATCH 05/13] mm/migrate_device: don't collect a range twice Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 06/13] mm/migrate_device: don't let go of the fault page Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 07/13] mm/migrate_device: look up fault folio after a split Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 08/13] mm/migrate_device: fix ksmd oops on a migrated KSM page Lorenzo Stoakes (ARM)
2026-11-11 21:54 ` David Hildenbrand (Arm)
2026-11-11 22:47 ` Alistair Popple
2026-11-11 23:27 ` Balbir Singh
2026-11-11 18:13 ` [PATCH 09/13] mm/migrate_device: fix use-after-free of the anon rmap Lorenzo Stoakes (ARM)
2026-11-11 23:04 ` Alistair Popple
2026-11-11 18:13 ` [PATCH 10/13] mm/migrate_device: refuse to migrate shadow stacks Lorenzo Stoakes (ARM)
2026-11-11 21:15 ` Balbir Singh
2026-11-11 23:15 ` Alistair Popple
2026-11-11 18:13 ` [PATCH 11/13] percpu: fix contig hints that are too low Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 12/13] percpu: search the whole reserved chunk Lorenzo Stoakes (ARM)
2026-11-11 18:13 ` [PATCH 13/13] percpu: queue the balance work on an unbound workqueue Lorenzo Stoakes (ARM)
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