From: Dave Hansen <dave@sr71.net>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] mm: madvise: MADV_POPULATE for quick pre-faulting
Date: Mon, 01 Jul 2013 21:43:29 -0700 [thread overview]
Message-ID: <51D25A71.3060007@sr71.net> (raw)
In-Reply-To: <20130702023748.GA10366@gmail.com>
On 07/01/2013 07:37 PM, Zheng Liu wrote:
> FWIW, it would be great if we can let MAP_POPULATE flag support shared
> mappings because in our product system there has a lot of applications
> that uses mmap(2) and then pre-faults this mapping. Currently these
> applications need to pre-fault the mapping manually.
Are you sure it doesn't? From a cursory look at the code, it looked to
me like it would populate anonymous and file-backed, but I didn't
double-check experimentally.
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] mm: madvise: MADV_POPULATE for quick pre-faulting
Date: Mon, 01 Jul 2013 21:43:29 -0700 [thread overview]
Message-ID: <51D25A71.3060007@sr71.net> (raw)
In-Reply-To: <20130702023748.GA10366@gmail.com>
On 07/01/2013 07:37 PM, Zheng Liu wrote:
> FWIW, it would be great if we can let MAP_POPULATE flag support shared
> mappings because in our product system there has a lot of applications
> that uses mmap(2) and then pre-faults this mapping. Currently these
> applications need to pre-fault the mapping manually.
Are you sure it doesn't? From a cursory look at the code, it looked to
me like it would populate anonymous and file-backed, but I didn't
double-check experimentally.
next prev parent reply other threads:[~2013-07-02 4:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 23:16 [RFC][PATCH] mm: madvise: MADV_POPULATE for quick pre-faulting Dave Hansen
2013-06-27 23:16 ` Dave Hansen
2013-06-28 5:47 ` Zheng Liu
2013-06-28 5:47 ` Zheng Liu
2013-06-28 15:48 ` Dave Hansen
2013-06-28 15:48 ` Dave Hansen
2013-06-29 2:20 ` Zheng Liu
2013-06-29 2:20 ` Zheng Liu
2013-07-01 16:16 ` Dave Hansen
2013-07-01 16:16 ` Dave Hansen
2013-07-02 2:37 ` Zheng Liu
2013-07-02 2:37 ` Zheng Liu
2013-07-02 4:43 ` Dave Hansen [this message]
2013-07-02 4:43 ` Dave Hansen
2013-07-02 6:06 ` Zheng Liu
2013-07-02 6:06 ` Zheng Liu
2013-07-14 3:12 ` Sam Ben
2013-07-14 3:12 ` Sam Ben
2013-07-15 0:22 ` Zheng Liu
2013-07-15 0:22 ` Zheng Liu
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