linux-kernel - Re: [GIT PULL] gfs2 fix

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Message-ID: <CAHk-=wipNXcy2qRF5d+oqO-LN+bR7Bmz+Vtvcapo_WigOzLirA@mail.gmail.com>
Date:   Tue, 3 May 2022 09:50:20 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Andreas Gruenbacher <agruenba@...hat.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Dave Chinner <dchinner@...hat.com>,
        cluster-devel <cluster-devel@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] gfs2 fix

On Tue, May 3, 2022 at 9:41 AM Andreas Gruenbacher <agruenba@...hat.com> wrote:
>
> That's happening in iomap_file_buffered_write() and iomap_iter():
>
>         while ((ret = iomap_iter(&iter, ops)) > 0)
>                 iter.processed = iomap_write_iter(&iter, i);
>
> Here, iomap_write_iter() returns how much progress it has made, which
> is stored in iter.processed, and iomap_iter() -> iomap_iter_advance()
> then updates iter.pos and iter.len based on iter.processed.

Ahh. I even had that file open in my editor in another window, but missed it.

So much for that theory.

              Linus