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 1D5FD480DFC for ; Tue, 13 Oct 2026 04:33:16 +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=1791865997; cv=none; b=QjCtfFovt7RosAy74s40+qjJgvehCgl+GcHnl7FYnqIq/Sr5B8gTppABqiLBWPVxgFGL+lXpMaditM6rRTSwPfKbgKNU8jVPsl9kaJfDVrTI2hLxwtnjHRjde945D5MpJUINBXgOwSBUXsAF3Nm/Af54FiNzwFeqN2AJPpH54Ec= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791865997; c=relaxed/simple; bh=6bm5lH/u4iNlTFDO6Ct809deag59uPM1ygppJiQ5vFI=; h=Date:To:From:Subject:Message-Id; b=NGzKAx0zgNx3/6iy3+UZopj4X6Z7kW306Z5JSmRZO1dsAN+wvC5NOFxrAz6jXLEDfw0hLWvsmiONV+FKxAFCKrZ8PvEUWwBU+PU3lGtRkqufQCqL7vT+AYYMPaZgyiUiQL1kRfOiy0o1lEnKlWajP2sd+D2vqmeAVREZVblQG8Y= 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=Lzf8/jHy; 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="Lzf8/jHy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E43A11F000FF; Tue, 13 Oct 2026 04:33:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791865996; bh=J9i81bHkc+rEZp7SOHVBtP7yWS4LGRZArLTm8HDgvPA=; h=Date:To:From:Subject; b=Lzf8/jHyf/3v1Fm0OLX16G0yV0V5LiNzHT2qtAAwiLtZc1bBSxQ0hgr2gnoH4O8Da kw9asOivHHs/kh8MhAvdKCmF7gDGqKz32GznA8dL58L1bdilO2X9amH91S5ANdGyhD xQdENhaEsEigBySpTeFeSt/QTg7ruEVlKg1z2zXg= Date: Mon, 12 Oct 2026 21:33:15 -0700 To: mm-commits@vger.kernel.org,willy@infradead.org,vbabka@kernel.org,usama.arif@linux.dev,pfalcato@suse.de,paulmck@kernel.org,ljs@kernel.org,liam@infradead.org,jannh@google.com,david@kernel.org,surenb@google.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] proc-task_mmu-change-proc_get_vma-to-stop-returning-gate-vma-at-the-end.patch removed from -mm tree Message-Id: <20261013043315.E43A11F000FF@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 it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Suren Baghdasaryan Subject: proc/task_mmu: change proc_get_vma() to stop returning gate VMA at the end Date: Fri, 18 Sep 2026 08:33:16 -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/20260918153318.758387-6-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 (Oracle) 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 @@ -240,9 +240,6 @@ 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; @@ -252,6 +249,7 @@ 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; @@ -281,19 +279,39 @@ 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