From: Oleg Nesterov <oleg@redhat.com>
To: Song Liu <songliubraving@fb.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org, matthew.wilcox@oracle.com,
kirill.shutemov@linux.intel.com, kernel-team@fb.com,
william.kucharski@oracle.com, srikar@linux.vnet.ibm.com
Subject: Re: [PATCH 2/2] uprobe: collapse THP pmd after removing all uprobes
Date: Wed, 31 Jul 2019 18:16:14 +0200 [thread overview]
Message-ID: <20190731161614.GC25078@redhat.com> (raw)
In-Reply-To: <20190729054335.3241150-3-songliubraving@fb.com>
On 07/28, Song Liu wrote:
>
> @@ -525,6 +527,9 @@ int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm,
>
> /* dec_mm_counter for old_page */
> dec_mm_counter(mm, MM_ANONPAGES);
> +
> + if (PageCompound(orig_page))
> + orig_page_huge = true;
I am wondering how find_get_page() can return a PageCompound() page...
IIUC, this is only possible if shmem_file(), right?
Oleg.
next prev parent reply other threads:[~2019-07-31 16:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-29 5:43 [PATCH 0/2] khugepaged: collapse pmd for pte-mapped THP Song Liu
2019-07-29 5:43 ` [PATCH 1/2] khugepaged: enable " Song Liu
2019-07-30 14:59 ` Kirill A. Shutemov
2019-07-30 17:28 ` Song Liu
2019-07-30 18:39 ` Song Liu
2019-07-29 5:43 ` [PATCH 2/2] uprobe: collapse THP pmd after removing all uprobes Song Liu
2019-07-30 15:01 ` Kirill A. Shutemov
2019-07-30 17:02 ` Song Liu
2019-07-31 16:16 ` Oleg Nesterov [this message]
2019-07-31 16:36 ` Song Liu
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=20190731161614.GC25078@redhat.com \
--to=oleg@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=kernel-team@fb.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=matthew.wilcox@oracle.com \
--cc=songliubraving@fb.com \
--cc=srikar@linux.vnet.ibm.com \
--cc=william.kucharski@oracle.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