From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Hugh Dickins <hughd@google.com>,
Dave Hansen <dave.hansen@intel.com>,
Johannes Weiner <hannes@cmpxchg.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
John Stultz <john.stultz@linaro.org>, Jason Evans <je@fb.com>,
Minchan Kim <minchan@kernel.org>
Subject: [RFC v2 3/3] mm: deactivate lazyfree pages
Date: Thu, 20 Mar 2014 15:38:58 +0900 [thread overview]
Message-ID: <1395297538-10491-4-git-send-email-minchan@kernel.org> (raw)
In-Reply-To: <1395297538-10491-1-git-send-email-minchan@kernel.org>
MADV_FREEed pages should be discarded before working set pages
are reclaimed because most of users(ex, tcmalloc and jemalloc)
have used it instead of MADV_DONTNEED which zap pages instantly.
Signed-off-by: Minchan Kim <minchan@kernel.org>
---
mm/memory.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/memory.c b/mm/memory.c
index 6f221225f62b..76b683e7d087 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1298,6 +1298,7 @@ static unsigned long lazyfree_pte_range(struct mmu_gather *tlb,
ptent = pte_mkclean(ptent);
set_pte_at(mm, addr, pte, ptent);
tlb_remove_tlb_entry(tlb, pte, addr);
+ deactivate_page(page);
} while (pte++, addr += PAGE_SIZE, addr != end);
arch_leave_lazy_mmu_mode();
pte_unmap_unlock(start_pte, ptl);
--
1.9.0
--
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prev parent reply other threads:[~2014-03-20 6:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-20 6:38 [RFC v2 0/3] support madvise(MADV_FREE) Minchan Kim
2014-03-20 6:38 ` [RFC v2 1/3] mm: " Minchan Kim
2014-03-20 6:38 ` [RFC v2 2/3] mm: work deactivate_page with anon pages Minchan Kim
2014-03-20 6:38 ` Minchan Kim [this message]
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