From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
kernel-team <kernel-team@fb.com>
Subject: Re: [PATCH] mm: readahead: do not cap readahead() and MADV_WILLNEED
Date: Tue, 1 Mar 2016 00:03:40 +0300 [thread overview]
Message-ID: <20160229210339.GA15095@node.shutemov.name> (raw)
In-Reply-To: <20160229194159.GB29896@cmpxchg.org>
On Mon, Feb 29, 2016 at 02:41:59PM -0500, Johannes Weiner wrote:
> That, or switch to read() from a separate thread for cache priming.
mmap(MAP_POPULATE) would save you some copy_to_user() overhead, comparing
to read().
--
Kirill A. Shutemov
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prev parent reply other threads:[~2016-02-29 21:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-24 1:38 [PATCH] mm: readahead: do not cap readahead() and MADV_WILLNEED Johannes Weiner
2016-02-24 2:34 ` Linus Torvalds
2016-02-29 19:41 ` Johannes Weiner
2016-02-29 21:03 ` Kirill A. Shutemov [this message]
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