linux-kernel - Re: [PATCH v6 1/4] mm/migration: make isolate_movable

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Message-ID: <20170207003336.GB12188@bbox>
Date:   Tue, 7 Feb 2017 09:33:36 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     Yisheng Xie <xieyisheng1@...wei.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <akpm@...ux-foundation.org>, <mhocko@...nel.org>,
        <ak@...ux.intel.com>, <guohanjun@...wei.com>, <hannes@...xchg.org>,
        <iamjoonsoo.kim@....com>, <mgorman@...hsingularity.net>,
        <n-horiguchi@...jp.nec.com>, <arbab@...ux.vnet.ibm.com>,
        <izumi.taku@...fujitsu.com>, <vkuznets@...hat.com>,
        <vbabka@...e.cz>, <qiuxishi@...wei.com>
Subject: Re: [PATCH v6 1/4] mm/migration: make isolate_movable_page() return
 int type

On Fri, Feb 03, 2017 at 03:59:27PM +0800, Yisheng Xie wrote:
> Change the return type of isolate_movable_page() from bool to int.  It
> will return 0 when isolate movable page successfully, and return -EBUSY
> when it isolates failed.
> 
> There is no functional change within this patch but prepare for later
> patch.
> 
> Signed-off-by: Yisheng Xie <xieyisheng1@...wei.com>
> Suggested-by: Michal Hocko <mhocko@...nel.org>
> Suggested-by: Minchan Kim <minchan@...nel.org>
Acked-by: Minchan Kim <minchan@...nel.org>

Thanks.