| Message ID | 20221116102659.70287-19-david@redhat.com |
|---|---|
| State | New |
| Headers | show
Return-Path: <linux-samsung-soc-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
aws-us-west-2-korg-lkml-1.web.codeaurora.org
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
by smtp.lore.kernel.org (Postfix) with ESMTP id 6D8B5C433FE
for <linux-samsung-soc@archiver.kernel.org>;
Wed, 16 Nov 2022 10:42:58 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
id S238601AbiKPKm4 (ORCPT
<rfc822;linux-samsung-soc@archiver.kernel.org>);
Wed, 16 Nov 2022 05:42:56 -0500
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48904 "EHLO
lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S233263AbiKPKkd (ORCPT
<rfc822;linux-samsung-soc@vger.kernel.org>);
Wed, 16 Nov 2022 05:40:33 -0500
Received: from us-smtp-delivery-124.mimecast.com
(us-smtp-delivery-124.mimecast.com [170.10.133.124])
by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C42F731374
for <linux-samsung-soc@vger.kernel.org>;
Wed, 16 Nov 2022 02:29:46 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;
s=mimecast20190719; t=1668594586;
h=from:from:reply-to:subject:subject:date:date:message-id:message-id:
to:to:cc:cc:mime-version:mime-version:
content-transfer-encoding:content-transfer-encoding:
in-reply-to:in-reply-to:references:references;
bh=Vwm/knGeRKTOygKvA/Obl+ChXNhkjAzB2LSFVD/DetE=;
b=DPPmTpHXTbP17ud0y/MHmts+Bvnc3V0j/di9SSL1iO8dMJGmp+sfaV1GdV2c5etCQV45P8
e6sGWwOOcVUrkShOmcLxtyqR1YKdjz0Qm3U2T+gXMAlJzL/ovJOJsr9ia/o3WXK1dPTiM1
giRSX/vW4pxrok3dMXocBZJ2B0cKQvE=
Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com
[66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS
(version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
us-mta-454-brbllGSGP4mJ4Nc_w7a0rA-1; Wed, 16 Nov 2022 05:29:41 -0500
X-MC-Unique: brbllGSGP4mJ4Nc_w7a0rA-1
Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com
[10.11.54.4])
(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
(No client certificate requested)
by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 714823C0E216;
Wed, 16 Nov 2022 10:29:40 +0000 (UTC)
Received: from t480s.fritz.box (unknown [10.39.193.216])
by smtp.corp.redhat.com (Postfix) with ESMTP id 8A8D52028E8F;
Wed, 16 Nov 2022 10:29:33 +0000 (UTC)
From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: x86@kernel.org, linux-alpha@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
sparclinux@vger.kernel.org, linux-um@lists.infradead.org,
etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-samsung-soc@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-media@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-perf-users@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
John Hubbard <jhubbard@nvidia.com>,
Peter Xu <peterx@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Hugh Dickins <hughd@google.com>, Nadav Amit <namit@vmware.com>,
Vlastimil Babka <vbabka@suse.cz>,
Matthew Wilcox <willy@infradead.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
Muchun Song <songmuchun@bytedance.com>,
Shuah Khan <shuah@kernel.org>,
Lucas Stach <l.stach@pengutronix.de>,
David Airlie <airlied@gmail.com>,
Oded Gabbay <ogabbay@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Christoph Hellwig <hch@infradead.org>,
Alex Williamson <alex.williamson@redhat.com>,
David Hildenbrand <david@redhat.com>,
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
Leon Romanovsky <leon@kernel.org>
Subject: [PATCH mm-unstable v1 18/20] RDMA/hw/qib/qib_user_pages: remove
FOLL_FORCE usage
Date: Wed, 16 Nov 2022 11:26:57 +0100
Message-Id: <20221116102659.70287-19-david@redhat.com>
In-Reply-To: <20221116102659.70287-1-david@redhat.com>
References: <20221116102659.70287-1-david@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4
Precedence: bulk
List-ID: <linux-samsung-soc.vger.kernel.org>
X-Mailing-List: linux-samsung-soc@vger.kernel.org
|
| Series |
mm/gup: remove FOLL_FORCE usage from drivers (reliable R/O long-term pinning)
|
expand
|
diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c index f4b5f05058e4..f693bc753b6b 100644 --- a/drivers/infiniband/hw/qib/qib_user_pages.c +++ b/drivers/infiniband/hw/qib/qib_user_pages.c @@ -110,7 +110,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages, for (got = 0; got < num_pages; got += ret) { ret = pin_user_pages(start_page + got * PAGE_SIZE, num_pages - got, - FOLL_LONGTERM | FOLL_WRITE | FOLL_FORCE, + FOLL_LONGTERM | FOLL_WRITE, p + got, NULL); if (ret < 0) { mmap_read_unlock(current->mm);
FOLL_FORCE is really only for ptrace access. As we unpin the pinned pages using unpin_user_pages_dirty_lock(true), the assumption is that all these pages are writable. FOLL_FORCE in this case seems to be a legacy leftover. Let's just remove it. Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Signed-off-by: David Hildenbrand <david@redhat.com> --- drivers/infiniband/hw/qib/qib_user_pages.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)