linux-kernel - Re: [RFC 1/2] mm: disable LRU pagevec during the migration temporarily

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Message-ID: <20210217211143.GN2858050@casper.infradead.org>
Date:   Wed, 17 Feb 2021 21:11:43 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Minchan Kim <minchan@...nel.org>
Cc:     Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, cgoldswo@...eaurora.org,
        linux-fsdevel@...r.kernel.org, david@...hat.com, vbabka@...e.cz,
        viro@...iv.linux.org.uk, joaodias@...gle.com
Subject: Re: [RFC 1/2] mm: disable LRU pagevec during the migration
 temporarily

On Wed, Feb 17, 2021 at 12:51:25PM -0800, Minchan Kim wrote:
> I'd like to avoid atomic operation if we could.

Why do you think that the spinlock is better?