Linux-kselftest Archive on lore.kernel.org
 help / color / Atom feed
From: Mike Kravetz <mike.kravetz@oracle.com>
To: Mina Almasry <almasrymina@google.com>
Cc: shuah <shuah@kernel.org>, David Rientjes <rientjes@google.com>,
	Shakeel Butt <shakeelb@google.com>,
	Greg Thelen <gthelen@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	open list <linux-kernel@vger.kernel.org>,
	linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	cgroups@vger.kernel.org
Subject: Re: [PATCH v11 6/9] hugetlb_cgroup: support noreserve mappings
Date: Tue, 11 Feb 2020 13:51:33 -0800
Message-ID: <6b097a9d-3b2c-94cb-21a8-7e7a55a8f635@oracle.com> (raw)
In-Reply-To: <CAHS8izMGreJgOhG8ivE2OH9bq98BmvxAqtBc=M9waTqOKv3eeQ@mail.gmail.com>

On 2/11/20 1:35 PM, Mina Almasry wrote:
> On Thu, Feb 6, 2020 at 2:31 PM Mike Kravetz <mike.kravetz@oracle.com> wrote:
>> On 2/3/20 3:22 PM, Mina Almasry wrote:
>>> +++ b/mm/hugetlb.c
>>> @@ -1339,6 +1339,9 @@ static void __free_huge_page(struct page *page)
>>>       clear_page_huge_active(page);
>>>       hugetlb_cgroup_uncharge_page(hstate_index(h), pages_per_huge_page(h),
>>>                                    page, false);
>>> +     hugetlb_cgroup_uncharge_page(hstate_index(h), pages_per_huge_page(h),
>>> +                                  page, true);
>>> +
>>
>> When looking at the code without change markings, the two above lines
>> look so similar my first thought is there must be a mistake.
>>
>> A suggestion for better code readability:
>> - hugetlb_cgroup_uncharge_page could just take "struct hstate *h" and
>>   get both hstate_index(h) and pages_per_huge_page(h).
>> - Perhaps make hugetlb_cgroup_uncharge_page and
>>   hugetlb_cgroup_uncharge_page_rsvd be wrappers around a common routine.
>>   Then the above would look like:
>>
>>   hugetlb_cgroup_uncharge_page(h, page);
>>   hugetlb_cgroup_uncharge_page_rsvd(h, page);
>>
> 
> I did modify the interfaces to this, as it's much better for
> readability indeed. Unfortunately the patch the adds interfaces
> probably needs a re-review now as it's changed quite a bit, I did not
> carry your or David's Reviewed-by.

No worries.  Happy to review again.

-- 
Mike Kravetz

  reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-03 23:22 [PATCH v11 1/9] hugetlb_cgroup: Add hugetlb_cgroup reservation counter Mina Almasry
2020-02-03 23:22 ` [PATCH v11 2/9] hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations Mina Almasry
2020-02-05 22:08   ` Mike Kravetz
2020-02-06 18:16     ` Mina Almasry
2020-02-03 23:22 ` [PATCH v11 3/9] hugetlb_cgroup: add reservation accounting for private mappings Mina Almasry
2020-02-05 23:26   ` Mike Kravetz
2020-02-03 23:22 ` [PATCH v11 4/9] hugetlb: disable region_add file_region coalescing Mina Almasry
2020-02-05 23:57   ` Mike Kravetz
2020-02-06  1:43     ` Mina Almasry
2020-02-06  2:12       ` Mike Kravetz
2020-02-03 23:22 ` [PATCH v11 5/9] hugetlb_cgroup: add accounting for shared mappings Mina Almasry
2020-02-06 19:33   ` Mike Kravetz
2020-02-06 20:09     ` Mina Almasry
2020-02-03 23:22 ` [PATCH v11 6/9] hugetlb_cgroup: support noreserve mappings Mina Almasry
2020-02-06 22:31   ` Mike Kravetz
2020-02-07 18:16     ` Mike Kravetz
2020-02-11 21:35     ` Mina Almasry
2020-02-11 21:51       ` Mike Kravetz [this message]
2020-02-03 23:22 ` [PATCH v11 7/9] hugetlb: support file_region coalescing again Mina Almasry
2020-02-07  0:17   ` Mike Kravetz
2020-02-07 18:44     ` Mina Almasry
2020-02-03 23:22 ` [PATCH v11 8/9] hugetlb_cgroup: Add hugetlb_cgroup reservation tests Mina Almasry
2020-02-04 16:26   ` Sandipan Das
2020-02-04 20:36     ` Mina Almasry
2020-02-04 22:33       ` Mina Almasry
2020-02-05 12:42         ` Sandipan Das
2020-02-05 18:03           ` Mina Almasry
2020-02-03 23:22 ` [PATCH v11 9/9] hugetlb_cgroup: Add hugetlb_cgroup reservation docs Mina Almasry
2020-02-05 19:36 ` [PATCH v11 1/9] hugetlb_cgroup: Add hugetlb_cgroup reservation counter Mike Kravetz

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=6b097a9d-3b2c-94cb-21a8-7e7a55a8f635@oracle.com \
    --to=mike.kravetz@oracle.com \
    --cc=akpm@linux-foundation.org \
    --cc=almasrymina@google.com \
    --cc=cgroups@vger.kernel.org \
    --cc=gthelen@google.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=rientjes@google.com \
    --cc=shakeelb@google.com \
    --cc=shuah@kernel.org \
    /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

Linux-kselftest Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-kselftest/0 linux-kselftest/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-kselftest linux-kselftest/ https://lore.kernel.org/linux-kselftest \
		linux-kselftest@vger.kernel.org
	public-inbox-index linux-kselftest

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kselftest


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git