linux-kernel - Re: [PATCHv2 1/2] mm/gup: fix omission of check on FOLL_LONGTERM in get_user_pages

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Date:   Tue, 4 Jun 2019 00:17:31 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Pingfan Liu <kernelfans@...il.com>
Cc:     Christoph Hellwig <hch@...radead.org>, linux-mm@...ck.org,
        Ira Weiny <ira.weiny@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Matthew Wilcox <willy@...radead.org>,
        John Hubbard <jhubbard@...dia.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Keith Busch <keith.busch@...el.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv2 1/2] mm/gup: fix omission of check on FOLL_LONGTERM in
 get_user_pages_fast()

On Tue, Jun 04, 2019 at 03:13:21PM +0800, Pingfan Liu wrote:
> Is it a convention? scripts/checkpatch.pl can not detect it. Could you
> show me some light so later I can avoid it?

If you look at most kernel code you can see two conventions:

 - double tabe indent
 - indent to the start of the first agument line

Everything else is rather unusual.