[Linux-cachefs] [PATCH] cachefiles: allocate static minor for /dev/cachefiles

David Howells dhowells at redhat.com
Thu Jun 22 13:42:54 UTC 2023


Marcel Holtmann <marcel at holtmann.org> wrote:

> The cachefiles misc character device uses MISC_DYNAMIC_MINOR and thus
> doesn't support module auto-loading. Assign a static minor number for it
> and provide appropriate module aliases for it. This is enough for kmod to
> create the /dev/cachefiles device node on startup and facility module
> auto-loading.

Why?  The systemd unit file for it just modprobe's the module first.  It's a
specialist device file only for use by the appropriate daemon.

David


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