On Tue, May 05, 2026 at 08:58:21AM -0700, Darrick J. Wong wrote:
> Hrm.  A bisect would be the best (but least conference-friendly) option
> to narrow things down.

Well, a bisect was a bit painful because I had to cherry-pick patches
so I could get a successfull build.  But I did finally come up with
the guilty commit, and it's.... surprising at least to me:

commit b0bd58062bbf645942ab4f0aced3bb229f462dde
Author: Darrick J. Wong <djwong@kernel.org>
Date:   Thu Aug 28 10:30:40 2025 -0700

    fuse2fs: cache symlink targets in the kernel

    Speed up symlinks by allowing the kernel to cache them.

    Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>

I don't know why it made a difference, but this attached patch appears
fix the MacOS regression.  Could this be a bug in MacFuse[1]?  FWIW, I'm
running MacFuse 5.2.0_1 from MacPorts.

[1] https://macfuse.github.io

I could condition the patch so that we only avoid setting
FUSE_CAP_CACHE_SYMLINKS on MacOS?  WDYT?

						- Ted