public inbox for fstests@vger.kernel.org
 help / color / mirror / Atom feed
From: Chao Yu <chao@kernel.org>
To: Joanne Chang <joannechien@google.com>,
	Zorro Lang <zlang@kernel.org>,
	fstests@vger.kernel.org
Cc: chao@kernel.org, Jaegeuk Kim <jaegeuk@kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [PATCH v2] f2fs/011: use random data to avoid file compression
Date: Thu, 30 Oct 2025 14:50:21 +0800	[thread overview]
Message-ID: <010cc7fc-4d51-49b3-929a-06b1e408580c@kernel.org> (raw)
In-Reply-To: <20251030054540.278518-1-joannechien@google.com>

On 10/30/25 13:45, Joanne Chang wrote:
> Currently, the created files are filled with 0. When filesystem level
> compression is used, they take up much less space than expected. So
> the final fallocate does not show an error.
> 
> The created files are filled by /dev/urandom instead to ensure they
> are not compressed. This way the files take up the same space whether
> compression is used or not.
> 
> Signed-off-by: Joanne Chang <joannechien@google.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,

      reply	other threads:[~2025-10-30  6:50 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-30  5:45 [PATCH v2] f2fs/011: use random data to avoid file compression Joanne Chang
2025-10-30  6:50 ` Chao Yu [this message]

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=010cc7fc-4d51-49b3-929a-06b1e408580c@kernel.org \
    --to=chao@kernel.org \
    --cc=fstests@vger.kernel.org \
    --cc=jaegeuk@kernel.org \
    --cc=joannechien@google.com \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=zlang@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
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