From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A3E733845AC for ; Thu, 17 Sep 2026 16:22:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789662180; cv=none; b=gy6BFgYZkCIjuuHbCn7EZWJbSP1vqYmQi75jsr7a/QH7TYAFzpA148gFF3b6A4hdemB9dlN8wvj02RyRG1ryFw5Zjfv468ojZoSvQrwKniZCaWziv3fcA8e6GKg1TSy5+abvLVKb68TzmpH6lXdIDp+c5srBTonc7xLZTJVayy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789662180; c=relaxed/simple; bh=MdSqWGMik8w9Pot9uVB0ZnteJQh6N1/o67nxCD4dc3g=; h=Date:To:From:Subject:Message-Id; b=o0mzoqm9S0BfeEHwLh3Ii7O86UnUCzezbk70pMK5tXpTim00Zy08RRF/1GdQJEycqQUlnhyS6jyqwBohgNFJeodNWgI2SkgOpo1Rkc/6nua7xRPNpOKT47fiY5V0PTmlyg7W/KRmBTJA6TCu1mEI07Mxt3kUnpIWYc0jFUPgHFk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=0gkuz0z/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="0gkuz0z/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 267481F0089A; Thu, 17 Sep 2026 16:22:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789662178; bh=MuxQyn9rajjkY4GJjwdiDT7GiE5tfCx5kVL8fFbBu0M=; h=Date:To:From:Subject; b=0gkuz0z/9dxbt38FmQsFwdZOaGQ/pH4JOXdVMAFrOSLvCCVgu8b4qsJ4Ty/rV/DAO tz0CVYdYsA+CgBtjwyaBfA/GzyXzrgcJhANl4xxMUnwmXsRvFEhlEjYfzAaBXRKf0Q fMew7VxXxNhKmDuiaTVZBgmYVoLZP/rabQgW/B7s= Date: Thu, 17 Sep 2026 09:22:57 -0700 To: mm-commits@vger.kernel.org,surenb@google.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] proc-task_mmu-change-proc_get_vma-to-stop-returning-gate-vma-at-the-end.patch removed from -mm tree Message-Id: <20260917162258.267481F0089A@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: proc/task_mmu: change proc_get_vma() to stop returning gate VMA at the end has been removed from the -mm tree. Its filename was proc-task_mmu-change-proc_get_vma-to-stop-returning-gate-vma-at-the-end.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Suren Baghdasaryan Subject: proc/task_mmu: change proc_get_vma() to stop returning gate VMA at the end Date: Fri, 11 Sep 2026 12:41:43 -0700 proc_get_vma() returning gate VMA at the end is desirable for the its current m_start/m_next callers, as they need to report a gate VMA at the end of the address space. This behavior is very specific to these callers and makes proc_get_vma() hard to use for other purposes. Move this usage-specific behavior into the callers themselves so that proc_get_vma() returns either a valid VMA, an error or a NULL when no more VMAs are available. This makes it more generic, simpler and usable in the later patches. Link: https://lore.kernel.org/20260911194145.1781926-6-surenb@google.com Signed-off-by: Suren Baghdasaryan Signed-off-by: Andrew Morton Reviewed-by: Lorenzo Stoakes (ARM) Acked-by: David Hildenbrand (Arm) Cc: Jann Horn Cc: Liam R. Howlett Cc: Matthew Wilcox (Oracle) Cc: "Paul E . McKenney" Cc: Pedro Falcato Cc: Usama Arif Cc: Vlastimil Babka --- fs/proc/task_mmu.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) --- a/fs/proc/task_mmu.c~proc-task_mmu-change-proc_get_vma-to-stop-returning-gate-vma-at-the-end +++ a/fs/proc/task_mmu.c @@ -238,9 +238,6 @@ retry: * found the extended vma with the same vm_start. */ *ppos = vma->vm_end; - } else { - *ppos = SENTINEL_VMA_GATE; - vma = get_gate_vma(priv->lock_ctx.mm); } return vma; @@ -250,6 +247,7 @@ static void *m_start(struct seq_file *m, { struct proc_maps_private *priv = m->private; struct proc_maps_locking_ctx *lock_ctx; + struct vm_area_struct *vma; loff_t last_addr = *ppos; struct mm_struct *mm; @@ -279,19 +277,39 @@ static void *m_start(struct seq_file *m, *ppos = last_addr = priv->last_pos; vma_iter_init(&priv->iter, mm, (unsigned long)last_addr); hold_task_mempolicy(priv); + /* + * If seq_file had to flush its collected data right after m_next() set + * position to SENTINEL_VMA_GATE, m_start() will get that sentinel and + * should return gate_vma without calling proc_get_vma(). + */ if (last_addr == SENTINEL_VMA_GATE) return get_gate_vma(mm); - return proc_get_vma(m, ppos); + vma = proc_get_vma(m, ppos); + if (vma) + return vma; + + /* Return gate VMA at the end */ + *ppos = SENTINEL_VMA_GATE; + return get_gate_vma(mm); } static void *m_next(struct seq_file *m, void *v, loff_t *ppos) { + struct proc_maps_private *priv = m->private; + struct vm_area_struct *vma; + if (*ppos == SENTINEL_VMA_GATE) { *ppos = SENTINEL_VMA_END; return NULL; } - return proc_get_vma(m, ppos); + vma = proc_get_vma(m, ppos); + if (vma) + return vma; + + /* Return gate VMA at the end */ + *ppos = SENTINEL_VMA_GATE; + return get_gate_vma(priv->lock_ctx.mm); } static void m_stop(struct seq_file *m, void *v) _ Patches currently in -mm which might be from surenb@google.com are proc-task_mmu-read-proc-pid-smaps_rollup-under-per-vma-lock.patch selftests-proc-add-proc-pid-smaps_rollup-tearing-tests.patch