From: Johannes Weiner <hannes@cmpxchg.org>
To: Shakeel Butt <shakeelb@google.com>
Cc: Amir Goldstein <amir73il@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Jan Kara <jack@suse.com>, Greg Thelen <gthelen@google.com>,
Roman Gushchin <guro@fb.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
LKML <linux-kernel@vger.kernel.org>,
Cgroups <cgroups@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>, Jan Kara <jack@suse.cz>
Subject: Re: [PATCH 1/2] fs: fsnotify: account fsnotify metadata to kmemcg
Date: Tue, 26 Jun 2018 14:57:24 -0400 [thread overview]
Message-ID: <20180626185724.GA3958@cmpxchg.org> (raw)
In-Reply-To: <CALvZod5ARMZL+eD8-mrxeBvxJcuVPXaCwWEgUyQw85xXWxHauA@mail.gmail.com>
On Tue, Jun 26, 2018 at 11:00:53AM -0700, Shakeel Butt wrote:
> On Mon, Jun 25, 2018 at 10:49 PM Amir Goldstein <amir73il@gmail.com> wrote:
> >
> ...
> >
> > The verb 'unuse' takes an argument memcg and 'uses' it - too weird.
> > You can use 'override'/'revert' verbs like override_creds or just call
> > memalloc_use_memcg(old_memcg) since there is no reference taken
> > anyway in use_memcg and no reference released in unuse_memcg.
> >
> > Otherwise looks good to me.
> >
>
> Thanks for your feedback. Just using memalloc_use_memcg(old_memcg) and
> ignoring the return seems more simple. I will wait for feedback from
> other before changing anything.
We're not nesting calls to memalloc_use_memcg(), right? So we don't
have to return old_memcg and don't have to pass anything to unuse, it
can always set current->active_memcg to NULL.
next prev parent reply other threads:[~2018-06-26 18:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-25 23:06 [PATCH v7 0/2] Directed kmem charging Shakeel Butt
2018-06-25 23:06 ` [PATCH 1/2] fs: fsnotify: account fsnotify metadata to kmemcg Shakeel Butt
2018-06-26 5:49 ` Amir Goldstein
2018-06-26 18:00 ` Shakeel Butt
2018-06-26 18:57 ` Johannes Weiner [this message]
2018-06-26 19:07 ` Shakeel Butt
2018-06-27 7:31 ` Jan Kara
2018-06-26 19:06 ` Johannes Weiner
2018-06-26 20:05 ` Shakeel Butt
2018-06-27 5:50 ` Amir Goldstein
2018-06-25 23:06 ` [PATCH 2/2] fs, mm: account buffer_head " Shakeel Butt
2018-06-27 19:12 [PATCH v8 0/2] Directed kmem charging Shakeel Butt
2018-06-27 19:12 ` [PATCH 1/2] fs: fsnotify: account fsnotify metadata to kmemcg Shakeel Butt
2018-06-28 10:02 ` Jan Kara
2018-06-28 19:21 ` Shakeel Butt
2018-06-29 9:52 ` Michal Hocko
2018-06-29 17:44 ` Jan Kara
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=20180626185724.GA3958@cmpxchg.org \
--to=hannes@cmpxchg.org \
--cc=akpm@linux-foundation.org \
--cc=amir73il@gmail.com \
--cc=cgroups@vger.kernel.org \
--cc=gthelen@google.com \
--cc=guro@fb.com \
--cc=jack@suse.com \
--cc=jack@suse.cz \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=shakeelb@google.com \
--cc=vdavydov.dev@gmail.com \
--cc=viro@zeniv.linux.org.uk \
/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