Thread (40 messages) 40 messages, 6 authors, 2017-02-07

Re: [PATCH] mm: extend zero pages to same element pages for zram

From: Minchan Kim <minchan@kernel.org>
Date: 2017-01-25 05:46:24
Also in: lkml

On Wed, Jan 25, 2017 at 02:38:49PM +0900, Sergey Senozhatsky wrote:
On (01/25/17 13:51), Minchan Kim wrote:
[..]
quoted
quoted
Minchan, zhouxianrong, I was completely wrong. we can't
do memset(). d'oh, I did not know it truncates 4 bytes to
one byte only (doesn't make too much sense to me).
Now, I read Matthew's comment and understood. Thanks.
It means zhouxianrong's patch I sent recently is okay?
this one looks OK to me
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1316290.html


I'd agree with Joonsoo that doing forward prefetching is _probably_ better
than backwards prefetching. not that it necessarily should confuse the CPU
(need to google if ARM handles it normally), but still.
Okay, let's settle down.

zhouxianrong, please resend one Sergey pointed out with changing to
forward loop. though, sorry for a lot confusion!
	-ss

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