xfs: don't call xfs_exchange_range_finish for a dry run

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LOLLM noticed that we strip file privileges and whatnot even for a dry
run.  We also shouldn't flush dirty data to disk or trim COW staging
events for a dry run.  Neither of those behaviors are allowed by the
manpage, so fix that by exiting early on DRY_RUN in various functions.

Cc: stable@vger.kernel.org # v6.10
Fixes: 42672471f9 ("xfs: bind together the front and back ends of the file range exchange code")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

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Darrick J. Wong 2026-09-10 22:53:55 -07:00 • committed by Carlos Maiolino

parent 3083ba8dde

commit 8fc18580ec

1 changed files with 8 additions and 3 deletions

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fs/xfs/xfs_exchrange.c

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