From: David Rientjes <rientjes@google.com>
To: Jianfeng Wang <jianfeng.w.wang@oracle.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, vbabka@suse.cz,
cl@linux.com, akpm@linux-foundation.org, penberg@kernel.org
Subject: Re: [PATCH v3 2/2] slub: use count_partial_free_approx() in slab_out_of_memory()
Date: Fri, 19 Apr 2024 17:18:44 -0700 (PDT) [thread overview]
Message-ID: <3f53b749-46b3-d1a6-8984-c8a3fc9481ac@google.com> (raw)
In-Reply-To: <20240419175611.47413-3-jianfeng.w.wang@oracle.com>
On Fri, 19 Apr 2024, Jianfeng Wang wrote:
> slab_out_of_memory() uses count_partial() to get the exact count
> of free objects for each node. As it may get called in the slab
> allocation path, count_partial_free_approx() can be used to avoid
> the risk and overhead of traversing a long partial slab list.
>
> At the same time, show_slab_objects() still uses count_partial().
> Thus, slub users can still have the option to access the exact
> count of objects via sysfs if the overhead is acceptable to them.
>
> Signed-off-by: Jianfeng Wang <jianfeng.w.wang@oracle.com>
Acked-by: David Rientjes <rientjes@google.com>
next prev parent reply other threads:[~2024-04-20 0:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 17:56 [PATCH v3 0/2] slub: introduce count_partial_free_approx() Jianfeng Wang
2024-04-19 17:56 ` [PATCH v3 1/2] " Jianfeng Wang
2024-04-20 0:18 ` David Rientjes
2024-04-22 7:49 ` Vlastimil Babka
2024-04-19 17:56 ` [PATCH v3 2/2] slub: use count_partial_free_approx() in slab_out_of_memory() Jianfeng Wang
2024-04-20 0:18 ` David Rientjes [this message]
2024-04-22 7:56 ` [PATCH v3 0/2] slub: introduce count_partial_free_approx() Vlastimil Babka
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=3f53b749-46b3-d1a6-8984-c8a3fc9481ac@google.com \
--to=rientjes@google.com \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=jianfeng.w.wang@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=penberg@kernel.org \
--cc=vbabka@suse.cz \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.