Re: [PATCH v3 06/12] man/man2/fsconfig.2: document "new" mount API

[Aleksa Sarai]

On 2025-08-09, Aleksa Sarai <cyphar@xxxxxxxxxx> wrote:
> +Note that the Linux kernel reuses filesystem instances
> +for many filesystems,
> +so (depending on the filesystem being configured and parameters used)
> +it is possible for the filesystem instance "created" by
> +.B \%FSCONFIG_CMD_CREATE
> +to, in fact, be a reference
> +to an existing filesystem instance in the kernel.
> +The kernel will attempt to merge the specified parameters
> +of this filesystem configuration context
> +with those of the filesystem instance being reused,
> +but some parameters may be
> +.IR "silently ignored" .

While looking at this again, I realised this explanation is almost
certainly incorrect in a few places (and was based on a misunderstanding
of how sget_fc() works and how it interacts with vfs_get_tree()).

I'll rewrite this in the next version.

-- 
Aleksa Sarai
Senior Software Engineer (Containers)
SUSE Linux GmbH
https://www.cyphar.com/

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