Date: Thu, 19 Mar 2026 18:05:56 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@FreeBSD.org> To: Warner Losh <imp@bsdimp.com> Cc: Martin Matuska <mm@freebsd.org>, h v <henry.vogt@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: zfs module not loaded anymore on e.g MINIMAL Message-ID: <86wlz73g23.fsf@ltc.des.dev> In-Reply-To: <861phf4uu3.fsf@ltc.des.dev> ("Dag-Erling =?utf-8?Q?Sm=C3=B8r?= =?utf-8?Q?grav=22's?= message of "Thu, 19 Mar 2026 18:01:24 %2B0100") References: <5913b3ac-2ed7-42ab-9c26-0d204c38c578@gmail.com> <CANCZdfq8gxi2ywvfvCdC%2Bsoqu_9-XPFrvqNNeGqjsJbUfkLoXg@mail.gmail.com> <fdb20aa1-46e6-41ff-83a4-8549ed56c316@gmail.com> <CANCZdfpQnALFj%2B5Hd0xC-5yO3wzjOmZG9TYQL6tWbHr_%2By%2BRFQ@mail.gmail.com> <299d29ce-98b9-4daf-aed7-a8cc9cd3a45f@FreeBSD.org> <86a4w3517o.fsf@ltc.des.dev> <CANCZdfpB7HoeQe9_rxHRQocYGM8DcZn9un-9YdmjBS8tzr6vsQ@mail.gmail.com> <861phf4uu3.fsf@ltc.des.dev>
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Dag-Erling Smørgrav <des@FreeBSD.org> writes: > Warner Losh <imp@bsdimp.com> writes: > > Any reason zstd can't be a module? > I had the same thought but it's going to take a bit of work. We'll have > to split up sys/kern/subr_compress.c into separate files for each > backend (currently gzio and zstdio), add module Makefiles, and figure > out how to make dumps dynamically use whatever compression is available. Actually I think this last bit is already in place. We just need to have each compression method register with subr_compress on load (and unregister on unload, which I don't think subr_compress currently supports). We also need to keep a running count of compression / decompression contexts to prevent unloading a method while it's in use. DES -- Dag-Erling Smørgrav - des@FreeBSD.orghome | help
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