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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue, 3 Aug 2021 17:10:22 -0700
Message-ID: <CAHk-=wiSwzrWOSN5UCrej3YcLRPmW5tViGSA5p2m-hiyKnQiMg@mail.gmail.com>
Subject: Re: [GIT PULL] vboxsf fixes for 5.14-1
To:     "Theodore Ts'o" <tytso@mit.edu>
Cc:     Matthew Wilcox <willy@infradead.org>,
        "Leonidas P. Papadakos" <papadakospan@gmail.com>,
        Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
        zajec5@gmail.com, "Darrick J. Wong" <djwong@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Hans de Goede <hdegoede@redhat.com>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>
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On Tue, Aug 3, 2021 at 5:04 PM Theodore Ts'o <tytso@mit.edu> wrote:
>
> TBH, I had forgotten that we had an in-kernel ntfs implementation.

Well, that's the one we are comparing to, so forgetting it is a bit of
an oversight.

> Whenver I've ever needed to access ntfs files, I've always used the
> ntfs-3g FUSE package.

The user-space FUSE thing does indeed work reasonably well.

It performs horribly badly if you care about things like that, though.

In fact, your own numbers kind of show that:

  ntfs/default: 670 tests, 55 failures, 211 skipped, 34783 seconds
  ntfs3/default: 664 tests, 67 failures, 206 skipped, 8106 seconds

and that's kind of the point of ntfs3.

           Linus