btrfs: fix the comment on btrfs_update_time

Since commit e41f941a23 ("Btrfs: move over to use ->update_time") this
is not a copy of the high-level file_update_time helper.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20251120064859.2911749-6-hch@lst.de
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2025-11-20 07:47:26 +01:00 • committed by Christian Brauner
commit f981264ae7
No known key found for this signature in database
GPG key ID: 91C61BC06578DCA2