linux-kernel - Re: [PATCH 1/6] mm: get_user_pages: consolidate error handling

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Date:   Fri, 12 Oct 2018 17:30:34 +1100
From:   Balbir Singh <bsingharora@...il.com>
To:     john.hubbard@...il.com
Cc:     Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        Christopher Lameter <cl@...ux.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Dan Williams <dan.j.williams@...el.com>,
        Jan Kara <jack@...e.cz>, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rdma <linux-rdma@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org, John Hubbard <jhubbard@...dia.com>
Subject: Re: [PATCH 1/6] mm: get_user_pages: consolidate error handling

On Thu, Oct 11, 2018 at 11:00:09PM -0700, john.hubbard@...il.com wrote:
> From: John Hubbard <jhubbard@...dia.com>
> 
> An upcoming patch requires a way to operate on each page that
> any of the get_user_pages_*() variants returns.
> 
> In preparation for that, consolidate the error handling for
> __get_user_pages(). This provides a single location (the "out:" label)
> for operating on the collected set of pages that are about to be returned.
> 
> As long every use of the "ret" variable is being edited, rename
> "ret" --> "err", so that its name matches its true role.
> This also gets rid of two shadowed variable declarations, as a
> tiny beneficial a side effect.
> 
> Reviewed-by: Jan Kara <jack@...e.cz>
> Reviewed-by: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
> ---

Looks good, might not be needed but
Reviewed-by: Balbir Singh <bsingharora@...il.com>