From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Song Liu <songliubraving@fb.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
oleg@redhat.com, rostedt@goodmis.org, mhiramat@kernel.org,
matthew.wilcox@oracle.com, kirill.shutemov@linux.intel.com,
kernel-team@fb.com
Subject: Re: [PATCH v4 3/5] mm, thp: introduce FOLL_SPLIT_PMD
Date: Fri, 21 Jun 2019 15:44:02 +0300 [thread overview]
Message-ID: <20190621124402.z4l67ck4vr5g7xe3@box> (raw)
In-Reply-To: <20190613175747.1964753-4-songliubraving@fb.com>
On Thu, Jun 13, 2019 at 10:57:45AM -0700, Song Liu wrote:
> @@ -419,6 +419,11 @@ static struct page *follow_pmd_mask(struct vm_area_struct *vma,
> put_page(page);
> if (pmd_none(*pmd))
> return no_page_table(vma, flags);
> + } else { /* flags & FOLL_SPLIT_PMD */
> + spin_unlock(ptl);
> + ret = 0;
> + split_huge_pmd(vma, pmd, address);
> + pte_alloc(mm, pmd);
pte_alloc() can fail and the failure should be propogated to the caller.
--
Kirill A. Shutemov
next prev parent reply other threads:[~2019-06-21 12:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 17:57 [PATCH v4 0/5] THP aware uprobe Song Liu
2019-06-13 17:57 ` [PATCH v4 1/5] mm: move memcmp_pages() and pages_identical() Song Liu
2019-06-13 17:57 ` [PATCH v4 2/5] uprobe: use original page when all uprobes are removed Song Liu
2019-06-13 17:57 ` [PATCH v4 3/5] mm, thp: introduce FOLL_SPLIT_PMD Song Liu
2019-06-21 12:44 ` Kirill A. Shutemov [this message]
2019-06-21 14:08 ` Song Liu
2019-06-13 17:57 ` [PATCH v4 4/5] uprobe: use FOLL_SPLIT_PMD instead of FOLL_SPLIT Song Liu
2019-06-13 17:57 ` [PATCH v4 5/5] uprobe: collapse THP pmd after removing all uprobes Song Liu
2019-06-21 12:48 ` Kirill A. Shutemov
2019-06-21 13:17 ` Song Liu
2019-06-21 13:36 ` Kirill A. Shutemov
2019-06-21 13:45 ` Song Liu
2019-06-21 16:30 ` Song Liu
2019-06-21 18:04 ` Song Liu
2019-06-24 12:34 ` Kirill A. Shutemov
2019-06-17 4:27 ` [PATCH v4 0/5] THP aware uprobe 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=20190621124402.z4l67ck4vr5g7xe3@box \
--to=kirill@shutemov.name \
--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=mhiramat@kernel.org \
--cc=oleg@redhat.com \
--cc=rostedt@goodmis.org \
--cc=songliubraving@fb.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