From: Oscar Salvador <osalvador@suse.de>
To: "HORIGUCHI NAOYA(堀口 直也)" <naoya.horiguchi@nec.com>
Cc: "yaoaili126@163.com" <yaoaili126@163.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"YANGFENG1@kingsoft.com" <YANGFENG1@kingsoft.com>,
Aili Yao <yaoaili@kingsoft.com>,
"willy@infradead.org" <willy@infradead.org>
Subject: Re: [PATCH] Fix incorrect compound page flags store
Date: Tue, 8 Sep 2020 10:51:57 +0200 [thread overview]
Message-ID: <20200908085153.GA12690@linux> (raw)
In-Reply-To: <20200908083630.GA15481@hori.linux.bs1.fc.nec.co.jp>
On Tue, Sep 08, 2020 at 08:36:32AM +0000, HORIGUCHI NAOYA(堀口 直也) wrote:
>
> Theoretically, it could happen that a error could be collapsed into a new
I guess you meant page here? ^^^^
> thp just after passing over the following block:
>
> 1408 if (PageTransHuge(hpage)) {
> 1409 if (try_to_split_thp_page(p, "Memory Failure") < 0) {
> 1410 action_result(pfn, MF_MSG_UNSPLIT_THP, MF_IGNORED);
> 1411 return -EBUSY;
> 1412 }
> 1413 VM_BUG_ON_PAGE(!page_count(p), p);
> 1414 }
>
> So I feel that some check might be added after holding page lock to avoid
> that case. Or acutally, it might better that moving the above block into
> page lock is more better for simpler code.
I will have a look at this.
Thanks
--
Oscar Salvador
SUSE L3
next prev parent reply other threads:[~2020-09-08 8:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-08 3:44 yaoaili126
2020-09-08 7:02 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-08 7:18 ` yaoaili [么爱利]
2020-09-08 7:26 ` Oscar Salvador
2020-09-08 8:02 ` yaoaili [么爱利]
2020-09-08 8:09 ` Oscar Salvador
2020-09-08 8:36 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-08 8:48 ` yaoaili [么爱利]
2020-09-08 9:00 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-08 9:10 ` yaoaili [么爱利]
2020-09-08 8:51 ` Oscar Salvador [this message]
2020-09-08 9:05 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-18 9:35 ` Oscar Salvador
2020-09-25 1:18 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-25 1:55 ` yaoaili [么爱利]
2020-09-25 4:35 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-25 5:52 ` yaoaili [么爱利]
-- strict thread matches above, loose matches on Subject: below --
2020-09-02 11:24 [PATCH] fix " yaoaili [么爱利]
2020-09-02 11:35 ` Matthew Wilcox
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=20200908085153.GA12690@linux \
--to=osalvador@suse.de \
--cc=YANGFENG1@kingsoft.com \
--cc=linux-mm@kvack.org \
--cc=naoya.horiguchi@nec.com \
--cc=willy@infradead.org \
--cc=yaoaili126@163.com \
--cc=yaoaili@kingsoft.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