[Bug 289237] sys/fs/fusefs/last_local_modify:main testcase fails intermittently on arm64 in CI

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289237

--- Comment #4 from commit-hook@FreeBSD.org ---
A commit in branch stable/15 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=3289d383171825622c907df79a0824c8c2175d1c

commit 3289d383171825622c907df79a0824c8c2175d1c
Author:     Alan Somers <asomers@FreeBSD.org>
AuthorDate: 2025-09-15 00:22:36 +0000
Commit:     Alan Somers <asomers@FreeBSD.org>
CommitDate: 2025-09-25 22:35:46 +0000

    fusefs: fix the last_local_modify LLM/LastLocalModify.lookup/3 test

    The LastLocalModify tests were originally written to simulate a race
    condition between VOP_SETATTR and VOP_LOOKUP.  They were later extended
    to cover some other VOPs that can affect file size, including VOP_WRITE.
    However, the test never correctly simulated the race with VOP_WRITE.  So
    that test only ever passed by accident.  Fix it by always opening the
    file with O_DIRECT.

    PR:             289237
    Reported by:    Siva Mahadevan <me@svmhdvn.name>

    (cherry picked from commit d1eaa52d10f9b85e5f6358e1a280899b9d55dd07)

 tests/sys/fs/fusefs/last_local_modify.cc | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

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