From: Rik van Riel <riel@surriel.com>
To: Yeoreum Yun <yeoreum.yun@arm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Jason Gunthorpe <jgg@ziepe.ca>,
John Hubbard <jhubbard@nvidia.com>, Peter Xu <peterx@redhat.com>,
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>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Yuan-Hao Hsu <aa9736195201@gmail.com>
Subject: Re: [PATCH v3 4/6] mm: internal: introduce FPB_LOCKLESS for folio_pte_batch_flags()
Date: Mon, 09 Nov 2026 23:51:28 -0500 [thread overview]
Message-ID: <163854fc5a1b794a807c3f5eb5b2955f1a4a9991.camel@surriel.com> (raw)
In-Reply-To: <20261109-refactor_gup_fast-v3-4-2aaef02df0e1@arm.com>
On Mon, 2026-11-09 at 12:32 +0000, Yeoreum Yun wrote:
> From: Yuan-Hao Hsu <aa9736195201@gmail.com>
>
> Add support for calling folio_pte_batch_flags() in GUP-fast context
> when we are
> not holding the PT lock. Instead of reading PTEs through ptep_get(),
> we have to
> use ptep_get_lockless().
>
> Specify the new behavior through a new flag FPB_LOCKLESS. We'll make
> use of this
> functionality for batching PTEs in gup_fast_pte_range() next.
>
> Acked-by: David Hildenbrand (Arm) <david@kernel.org>
> Signed-off-by: Yuan-Hao Hsu <aa9736195201@gmail.com>
> Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
--
All Rights Reversed.
next prev parent reply other threads:[~2026-11-10 4:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 12:32 [PATCH v3 0/6] mm: gup: batch PTE-mapped large folios in gup_fast_pte_range() Yeoreum Yun
2026-11-09 12:32 ` [PATCH v3 1/6] mm: khugepaged: ignore MADV_HUGEPAGE for shadow stacks Yeoreum Yun
2026-11-09 14:22 ` David Hildenbrand (Arm)
2026-11-09 15:24 ` Yeoreum Yun
2026-11-09 12:32 ` [PATCH v3 2/6] mm: gup: clarify a reason to check pte/pmd in gup_fast_pte_range() Yeoreum Yun
2026-11-10 3:50 ` Rik van Riel
2026-11-09 12:32 ` [PATCH v3 3/6] mm: gup: move gup_must_unshare() and INTERNAL_GUP_FLAGS to gup.c Yeoreum Yun
2026-11-10 4:49 ` Rik van Riel
2026-11-09 12:32 ` [PATCH v3 4/6] mm: internal: introduce FPB_LOCKLESS for folio_pte_batch_flags() Yeoreum Yun
2026-11-10 4:51 ` Rik van Riel [this message]
2026-11-09 12:32 ` [PATCH v3 5/6] mm: gup: introduce gup_unshared_pages() Yeoreum Yun
2026-11-09 12:32 ` [PATCH v3 6/6] mm: gup: batch PTE-mapped large folios in gup_fast_pte_range() Yeoreum Yun
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