From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Nitin Gupta <nitin.m.gupta@oracle.com>
Cc: linux-mm@kvack.org, steven.sistare@oracle.com,
"Andrew Morton" <akpm@linux-foundation.org>,
"Ingo Molnar" <mingo@kernel.org>, "Mel Gorman" <mgorman@suse.de>,
"Nadav Amit" <namit@vmware.com>,
"Minchan Kim" <minchan@kernel.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Vegard Nossum" <vegard.nossum@oracle.com>,
"Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>,
"Michal Hocko" <mhocko@suse.com>,
"David Rientjes" <rientjes@google.com>,
"Vlastimil Babka" <vbabka@suse.cz>,
"SeongJae Park" <sj38.park@gmail.com>, "Shaohua Li" <shli@fb.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"Andrea Arcangeli" <aarcange@redhat.com>,
"Mike Rapoport" <rppt@linux.vnet.ibm.com>,
"Anshuman Khandual" <khandual@linux.vnet.ibm.com>,
"Rik van Riel" <riel@redhat.com>,
"Ross Zwisler" <ross.zwisler@linux.intel.com>,
"Jan Kara" <jack@suse.cz>, "Dave Jiang" <dave.jiang@intel.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Matthew Wilcox" <willy@linux.intel.com>,
"Hugh Dickins" <hughd@google.com>,
"Tobin C Harding" <me@tobin.cc>,
"open list" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: Reduce memory bloat with THP
Date: Fri, 15 Dec 2017 13:01:51 +0300 [thread overview]
Message-ID: <20171215100151.b7j66q7sg2wsrex3@node.shutemov.name> (raw)
In-Reply-To: <1513301359-117568-1-git-send-email-nitin.m.gupta@oracle.com>
On Thu, Dec 14, 2017 at 05:28:52PM -0800, Nitin Gupta wrote:
> diff --git a/mm/madvise.c b/mm/madvise.c
> index 751e97a..b2ec07b 100644
> --- a/mm/madvise.c
> +++ b/mm/madvise.c
> @@ -508,6 +508,7 @@ static long madvise_dontneed_single_vma(struct vm_area_struct *vma,
> unsigned long start, unsigned long end)
> {
> zap_page_range(vma, start, end - start);
> + vma->space_efficient = true;
> return 0;
> }
>
And this modifies vma without down_write(mmap_sem).
No.
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2017-12-15 10:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-15 1:28 Nitin Gupta
2017-12-15 5:55 ` Anshuman Khandual
2017-12-16 7:18 ` Nitin Gupta
2017-12-15 10:00 ` Kirill A. Shutemov
2017-12-16 7:04 ` Nitin Gupta
2017-12-18 13:53 ` Peter Zijlstra
2017-12-15 10:01 ` Kirill A. Shutemov [this message]
2017-12-16 7:21 ` Nitin Gupta
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