From: Andrew Morton <akpm@linux-foundation.org>
To: Vernon Yang <vernon2gm@gmail.com>
Cc: hughd@google.com, baolin.wang@linux.alibaba.com,
da.gomez@samsung.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Vernon Yang <yanglincheng@kylinos.cn>
Subject: Re: [PATCH] mm: shmem: fix too little space for tmpfs only fallback 4KB
Date: Mon, 8 Sep 2025 16:22:20 -0700 [thread overview]
Message-ID: <20250908162220.480d7014cc6c6ad2e14748c5@linux-foundation.org> (raw)
In-Reply-To: <20250908123128.900254-1-vernon2gm@gmail.com>
On Mon, 8 Sep 2025 20:31:28 +0800 Vernon Yang <vernon2gm@gmail.com> wrote:
> From: Vernon Yang <yanglincheng@kylinos.cn>
>
> When the system memory is sufficient, allocating memory is always
> successful, but when tmpfs size is low (e.g. 1MB), it falls back
> directly from 2MB to 4KB, and other small granularity (8KB ~ 1024KB)
> will not be tried.
>
> Therefore add check whether the remaining space of tmpfs is sufficient
> for allocation. If there is too little space left, try smaller large
> folio.
Thanks.
What are the effects of this change? I'm assuming it's an
*improvement*, rather than a fix for some misbehavior?
next prev parent reply other threads:[~2025-09-08 23:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-08 12:31 Vernon Yang
2025-09-08 23:22 ` Andrew Morton [this message]
2025-09-09 14:16 ` Vernon Yang
2025-09-09 5:58 ` Baolin Wang
2025-09-09 12:29 ` Vernon Yang
2025-09-22 1:46 ` Baolin Wang
2025-09-22 2:51 ` Vernon Yang
2025-09-22 3:09 ` Baolin Wang
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=20250908162220.480d7014cc6c6ad2e14748c5@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=da.gomez@samsung.com \
--cc=hughd@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=vernon2gm@gmail.com \
--cc=yanglincheng@kylinos.cn \
/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
all inboxes | Powered by JetHome®