From: Andrew Morton <akpm@linux-foundation.org>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@suse.de>, Hugh Dickins <hughd@google.com>,
Rik van Riel <riel@redhat.com>, Ingo Molnar <mingo@kernel.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Hillf Danton <dhillf@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Joonsoo Kim <js1304@gmail.com>
Subject: Re: [PATCH 4/9] mm/rmap: make rmap_walk to get the rmap_walk_control argument
Date: Mon, 2 Dec 2013 14:52:58 -0800 [thread overview]
Message-ID: <20131202145258.9f14767c1190c068becece0d@linux-foundation.org> (raw)
In-Reply-To: <1385624926-28883-5-git-send-email-iamjoonsoo.kim@lge.com>
On Thu, 28 Nov 2013 16:48:41 +0900 Joonsoo Kim <iamjoonsoo.kim@lge.com> wrote:
> In each rmap traverse case, there is some difference so that we need
> function pointers and arguments to them in order to handle these
> difference properly.
>
> For this purpose, struct rmap_walk_control is introduced in this patch,
> and will be extended in following patch. Introducing and extending are
> separate, because it clarify changes.
>
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -198,7 +198,12 @@ out:
> */
> static void remove_migration_ptes(struct page *old, struct page *new)
> {
> - rmap_walk(new, remove_migration_pte, old);
> + struct rmap_walk_control rwc;
> +
> + memset(&rwc, 0, sizeof(rwc));
> + rwc.main = remove_migration_pte;
> + rwc.arg = old;
> + rmap_walk(new, &rwc);
> }
It is much neater to do
struct rmap_walk_control rwc = {
.main = remove_migration_pte,
.arg = old,
};
which will zero out all remaining fields as well.
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next prev parent reply other threads:[~2013-12-02 22:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-28 7:48 [PATCH 0/9] mm/rmap: unify rmap traversing functions through rmap_walk Joonsoo Kim
2013-11-28 7:48 ` [PATCH 1/9] mm/rmap: recompute pgoff for huge page Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-12-02 22:44 ` Andrew Morton
2013-12-03 2:01 ` Joonsoo Kim
2013-11-28 7:48 ` [PATCH 2/9] mm/rmap: factor nonlinear handling out of try_to_unmap_file() Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-11-28 7:48 ` [PATCH 3/9] mm/rmap: factor lock function out of rmap_walk_anon() Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-11-28 7:48 ` [PATCH 4/9] mm/rmap: make rmap_walk to get the rmap_walk_control argument Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-12-02 22:51 ` Andrew Morton
2013-12-03 2:03 ` Joonsoo Kim
2013-12-02 22:52 ` Andrew Morton [this message]
2013-11-28 7:48 ` [PATCH 5/9] mm/rmap: extend rmap_walk_xxx() to cope with different cases Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-12-03 2:05 ` Joonsoo Kim
2013-11-28 7:48 ` [PATCH 6/9] mm/rmap: use rmap_walk() in try_to_unmap() Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-12-02 23:01 ` Andrew Morton
2013-12-03 2:08 ` Joonsoo Kim
2013-11-28 7:48 ` [PATCH 7/9] mm/rmap: use rmap_walk() in try_to_munlock() Joonsoo Kim
2013-12-02 20:09 ` Naoya Horiguchi
2013-11-28 7:48 ` [PATCH 8/9] mm/rmap: use rmap_walk() in page_referenced() Joonsoo Kim
2013-12-02 20:10 ` Naoya Horiguchi
2013-11-28 7:48 ` [PATCH 9/9] mm/rmap: use rmap_walk() in page_mkclean() Joonsoo Kim
2013-12-02 20:10 ` Naoya Horiguchi
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