From: Alice Ryhl <aliceryhl@google.com>
To: Suren Baghdasaryan <surenb@google.com>
Cc: akpm@linux-foundation.org, dave.hansen@linux.intel.com,
Liam.Howlett@oracle.com, ljs@kernel.org, david@redhat.com,
willy@infradead.org, shakeel.butt@linux.dev, vbabka@kernel.org,
jannh@google.com, arve@android.com, cmllamas@google.com,
christian@brauner.io, tkjos@android.com, dsahern@kernel.org,
davem@davemloft.net, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
netdev@vger.kernel.org
Subject: Re: [PATCH v3 4/5] binder: Remove mmap_lock fallback
Date: Mon, 3 Aug 2026 10:34:42 +0000 [thread overview]
Message-ID: <anBuwuiOBKXJwnhT@google.com> (raw)
In-Reply-To: <20260802215459.2769283-5-surenb@google.com>
On Sun, Aug 02, 2026 at 02:54:58PM -0700, Suren Baghdasaryan wrote:
> From: Dave Hansen <dave.hansen@linux.intel.com>
>
> Previously, the per-VMA locking could fail in the face of writers
> which necessitate a fallback to mmap_lock. The new
> vma_start_read_unlocked() will wait for writers instead of failing.
>
> Use the new helper. Wait for writers. Remove the fallback to mmap_lock.
>
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
next prev parent reply other threads:[~2026-08-03 13:02 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-02 21:54 [PATCH v3 0/5] mm: Unconditional per-VMA locks and cleanups Suren Baghdasaryan
2026-08-02 21:54 ` [PATCH v3 1/5] mm: Make per-VMA locks available universally Suren Baghdasaryan
2026-08-03 10:49 ` Lorenzo Stoakes (ARM)
2026-08-03 14:01 ` Vlastimil Babka (SUSE)
2026-08-03 17:45 ` Suren Baghdasaryan
2026-08-03 15:24 ` Suren Baghdasaryan
2026-08-03 16:08 ` Lorenzo Stoakes (ARM)
2026-08-03 17:41 ` Suren Baghdasaryan
2026-08-03 17:45 ` Suren Baghdasaryan
2026-08-03 21:12 ` Jann Horn
2026-08-03 19:33 ` Jann Horn
2026-08-03 19:43 ` Suren Baghdasaryan
2026-08-02 21:54 ` [PATCH v3 2/5] binder: Make shrinker rely solely on per-VMA lock Suren Baghdasaryan
2026-08-03 9:48 ` Alice Ryhl
2026-08-03 10:50 ` Lorenzo Stoakes (ARM)
2026-08-03 11:11 ` Lorenzo Stoakes (ARM)
2026-08-03 11:33 ` Lorenzo Stoakes (ARM)
2026-08-03 18:02 ` Suren Baghdasaryan
2026-08-03 11:10 ` Lorenzo Stoakes (ARM)
2026-08-03 18:31 ` Suren Baghdasaryan
2026-08-02 21:54 ` [PATCH v3 3/5] mm: Add RCU-based VMA lookup helper that waits for writers Suren Baghdasaryan
2026-08-03 11:28 ` Lorenzo Stoakes (ARM)
2026-08-03 19:01 ` Suren Baghdasaryan
2026-08-03 14:55 ` Vlastimil Babka (SUSE)
2026-08-03 15:00 ` Lorenzo Stoakes (ARM)
2026-08-03 16:24 ` Vlastimil Babka (SUSE)
2026-08-03 16:43 ` Lorenzo Stoakes (ARM)
2026-08-03 19:13 ` Suren Baghdasaryan
2026-08-02 21:54 ` [PATCH v3 4/5] binder: Remove mmap_lock fallback Suren Baghdasaryan
2026-08-03 10:34 ` Alice Ryhl [this message]
2026-08-03 19:14 ` Suren Baghdasaryan
2026-08-03 11:33 ` Lorenzo Stoakes (ARM)
2026-08-03 19:16 ` Suren Baghdasaryan
2026-08-02 21:54 ` [PATCH v3 5/5] tcp: Remove mmap_lock fallback path Suren Baghdasaryan
2026-08-03 2:11 ` [PATCH v3 0/5] mm: Unconditional per-VMA locks and cleanups Barry Song
2026-08-03 17:51 ` Suren Baghdasaryan
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