linux-kernel - Re: Canvassing for network filesystem write size vs page size

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Message-ID: <YQwlehFilahEZg2T@angband.pl>
Date:   Thu, 5 Aug 2021 19:52:58 +0200
From:   Adam Borowski <kilobyte@...band.pl>
To:     David Howells <dhowells@...hat.com>
Cc:     Anna Schumaker <anna.schumaker@...app.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Jeff Layton <jlayton@...hat.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Mike Marshall <hubcap@...ibond.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Shyam Prasad N <nspmangalore@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-cachefs@...hat.com, linux-afs@...ts.infradead.org,
        linux-nfs@...r.kernel.org, linux-cifs@...r.kernel.org,
        ceph-devel@...r.kernel.org, v9fs-developer@...ts.sourceforge.net,
        devel@...ts.orangefs.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Canvassing for network filesystem write size vs page size

On Thu, Aug 05, 2021 at 05:35:33PM +0100, David Howells wrote:
>  - a complete folio currently is limited to PMD_SIZE or order 8, but could
>    theoretically go up to about 2GiB before various integer fields have to be
>    modified (not to mention the memory allocator).

No support for riscv 512GB pages? :p


-- 
⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ The ill-thought conversion to time64_t will make us suffer from
⢿⡄⠘⠷⠚⠋⠀ the Y292B problem.  So let's move the Epoch by 435451400064000000
⠈⠳⣄⠀⠀⠀⠀ and make it unsigned -- that'll almost double the range.