From: Simon Jeons <simon.jeons@gmail.com>
To: Lin Feng <linfeng@cn.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
bcrl@kvack.org, viro@zeniv.linux.org.uk, khlebnikov@openvz.org,
walken@google.com, kamezawa.hiroyu@jp.fujitsu.com,
minchan@kernel.org, riel@redhat.com, rientjes@google.com,
isimatu.yasuaki@jp.fujitsu.com, wency@cn.fujitsu.com,
laijs@cn.fujitsu.com, jiang.liu@huawei.com, mhocko@suse.cz,
linux-mm@kvack.org, linux-aio@kvack.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm: hotplug: implement non-movable version of get_user_pages() called get_user_pages_non_movable()
Date: Wed, 20 Feb 2013 19:31:54 +0800 [thread overview]
Message-ID: <5124B42A.1020908@gmail.com> (raw)
In-Reply-To: <5124A42B.1020905@cn.fujitsu.com>
On 02/20/2013 06:23 PM, Lin Feng wrote:
> Hi Simon,
>
> On 02/20/2013 05:58 PM, Simon Jeons wrote:
>>> The other is that this almost certainly broken for transhuge page
>>> handling. gup returns the head and tail pages and ordinarily this is ok
>> When need gup thp? in kvm case?
> gup just pins the wanted pages(for x86 is 4k size) of user address space in memory.
> We can't expect the pages have been allocated for user address space are thp or
> normal page. So we need to deal with them and I think it have nothing to do with kvm.
Ok, I'm curious about userspace process call which funtion(will call
gup) to pin pages except make_pages_present?
>
> thanks,
> linfeng
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-02-20 11:31 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-04 10:04 [PATCH 0/2] mm: hotplug: implement non-movable version of get_user_pages() to kill long-time pin pages Lin Feng
2013-02-04 10:04 ` [PATCH 1/2] mm: hotplug: implement non-movable version of get_user_pages() called get_user_pages_non_movable() Lin Feng
2013-02-05 0:06 ` Andrew Morton
2013-02-05 0:18 ` Andrew Morton
2013-02-05 3:09 ` Lin Feng
2013-02-05 21:13 ` Andrew Morton
2013-02-05 11:57 ` Mel Gorman
2013-02-05 13:32 ` Mel Gorman
2013-02-19 13:37 ` Lin Feng
2013-02-20 2:34 ` Lin Feng
2013-02-20 2:44 ` Wanpeng Li
2013-02-20 2:44 ` Wanpeng Li
[not found] ` <20130220024435.GA30208@hacker.(null)>
2013-02-20 2:59 ` Lin Feng
2013-02-20 9:58 ` Simon Jeons
2013-02-20 10:23 ` Lin Feng
2013-02-20 11:31 ` Simon Jeons [this message]
2013-02-20 11:54 ` Lin Feng
2013-02-06 2:26 ` Michel Lespinasse
2013-02-06 10:41 ` Mel Gorman
2013-02-18 10:34 ` Lin Feng
2013-02-18 15:17 ` Mel Gorman
2013-02-19 9:55 ` Lin Feng
2013-02-19 10:34 ` Mel Gorman
2013-02-04 10:04 ` [PATCH 2/2] fs/aio.c: use get_user_pages_non_movable() to pin ring pages when support memory hotremove Lin Feng
2013-02-04 15:18 ` Jeff Moyer
2013-02-04 23:02 ` Zach Brown
2013-02-05 5:35 ` Lin Feng
2013-02-05 5:06 ` Lin Feng
2013-02-05 0:58 ` [PATCH 0/2] mm: hotplug: implement non-movable version of get_user_pages() to kill long-time pin pages Minchan Kim
2013-02-05 4:42 ` Lin Feng
2013-02-05 5:25 ` Minchan Kim
2013-02-05 6:18 ` Lin Feng
2013-02-05 7:45 ` Minchan Kim
2013-02-05 8:27 ` Lin Feng
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5124B42A.1020908@gmail.com \
--to=simon.jeons@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=bcrl@kvack.org \
--cc=isimatu.yasuaki@jp.fujitsu.com \
--cc=jiang.liu@huawei.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=khlebnikov@openvz.org \
--cc=laijs@cn.fujitsu.com \
--cc=linfeng@cn.fujitsu.com \
--cc=linux-aio@kvack.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.cz \
--cc=minchan@kernel.org \
--cc=riel@redhat.com \
--cc=rientjes@google.com \
--cc=viro@zeniv.linux.org.uk \
--cc=walken@google.com \
--cc=wency@cn.fujitsu.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).