From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f200.google.com (mail-qt0-f200.google.com [209.85.216.200]) by kanga.kvack.org (Postfix) with ESMTP id E8EC26B0008 for ; Sat, 9 Jun 2018 08:31:05 -0400 (EDT) Received: by mail-qt0-f200.google.com with SMTP id j11-v6so14530539qtf.15 for ; Sat, 09 Jun 2018 05:31:05 -0700 (PDT) Received: from mx1.redhat.com (mx3-rdu2.redhat.com. [66.187.233.73]) by mx.google.com with ESMTPS id y64-v6si1422680qvy.245.2018.06.09.05.31.04 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 09 Jun 2018 05:31:04 -0700 (PDT) From: Ming Lei Subject: [PATCH V6 02/30] block: bio_set_pages_dirty can't see NULL bv_page in a valid bio_vec Date: Sat, 9 Jun 2018 20:29:46 +0800 Message-Id: <20180609123014.8861-3-ming.lei@redhat.com> In-Reply-To: <20180609123014.8861-1-ming.lei@redhat.com> References: <20180609123014.8861-1-ming.lei@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Jens Axboe , Christoph Hellwig , Alexander Viro , Kent Overstreet Cc: David Sterba , Huang Ying , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Theodore Ts'o , "Darrick J . Wong" , Coly Li , Filipe Manana , Randy Dunlap , Christoph Hellwig From: Christoph Hellwig So don't bother handling it. Reviewed-by: Ming Lei Signed-off-by: Christoph Hellwig --- block/bio.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/block/bio.c b/block/bio.c index 3e7d117c3346..ebd3ca62e037 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1634,10 +1634,8 @@ void bio_set_pages_dirty(struct bio *bio) int i; bio_for_each_segment_all(bvec, bio, i) { - struct page *page = bvec->bv_page; - - if (page && !PageCompound(page)) - set_page_dirty_lock(page); + if (!PageCompound(bvec->bv_page)) + set_page_dirty_lock(bvec->bv_page); } } EXPORT_SYMBOL_GPL(bio_set_pages_dirty); -- 2.9.5