From: Jonathan Corbet <corbet@lwn.net>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] Documentation: filesystems: cramfs: correct stale hard-link and endianness claims
Date: Sun, 03 May 2026 09:13:00 -0600 [thread overview]
Message-ID: <873408cyrn.fsf@trenco.lwn.net> (raw)
In-Reply-To: <20260422211039.270552-1-nico@fluxnic.net>
Nicolas Pitre <nico@fluxnic.net> writes:
> Two paragraphs in cramfs.rst have been misleading for a long time:
>
> - "Hard links are supported, but hard linked files will still have
> a link count of 1": mkcramfs does not preserve hard links; it
> deduplicates by content (eliminate_doubles()). Two names for
> the same on-disk inode in the source tree become two separate
> (content-shared) entries in the image, and cramfs always reports
> a link count of 1.
>
> - "Currently, cramfs must be written and read with architectures of
> the same endianness ... PAGE_SIZE == 4096 ... is a bug, but it
> hasn't been decided what the best fix is": the endianness
> situation has been settled for years -- the kernel checks for
> CRAMFS_MAGIC_WEND in cramfs_fill_super() and refuses the mount,
> and mkcramfs has gained -B / -L for producing images of the
> opposite endianness from the build host (useful for cross-builds,
> but the reader still needs to match). Restate this accurately.
>
> Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
> ---
> Documentation/filesystems/cramfs.rst | 22 ++++++++++++++--------
> 1 file changed, 14 insertions(+), 8 deletions(-)
I've applied both patches, thanks.
jon
prev parent reply other threads:[~2026-05-03 15:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-22 21:10 [PATCH 1/2] Documentation: filesystems: cramfs: correct stale hard-link and endianness claims Nicolas Pitre
2026-04-22 21:10 ` [PATCH 2/2] cramfs: drop obsolete Future Development notes and update tools URL Nicolas Pitre
2026-05-03 15:13 ` Jonathan Corbet [this message]
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