linux-kernel - Re: [PATCH -mm] mm, swap: Simplify total_swapcache_pages() with get_swap

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Message-ID: <20190527132857.GA1429@andrea>
Date:   Mon, 27 May 2019 15:28:57 +0200
From:   Andrea Parri <andrea.parri@...rulasolutions.com>
To:     "Paul E. McKenney" <paulmck@...ux.ibm.com>
Cc:     "Huang, Ying" <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Hugh Dickins <hughd@...gle.com>,
        Minchan Kim <minchan@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Jérôme Glisse <jglisse@...hat.com>,
        Michal Hocko <mhocko@...e.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        David Rientjes <rientjes@...gle.com>,
        Rik van Riel <riel@...hat.com>, Jan Kara <jack@...e.cz>,
        Dave Jiang <dave.jiang@...el.com>,
        Daniel Jordan <daniel.m.jordan@...cle.com>
Subject: Re: [PATCH -mm] mm, swap: Simplify total_swapcache_pages() with
 get_swap_device()

> But where do I find get_swap_device() and put_swap_device()?  I do not
> see them in current mainline.

You should see them in the -mm tree:

  https://ozlabs.org/~akpm/mmots/broken-out/mm-swap-fix-race-between-swapoff-and-some-swap-operations.patch

or

  http://git.cmpxchg.org/cgit.cgi/linux-mmots.git/commit/?id=87efc56527b92a59d15c5d4e4b05f875b276a59a

Thanks,
  Andrea