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[ Upstream commit39d86db34e] file_start_write() and file_end_write() should be added around ->write_iter(). Recently we switch to ->write_iter() from vfs_iter_write(), and the implied file_start_write() and file_end_write() are lost. Also we never add them for dio code path, so add them back for covering both. Cc: Jeff Moyer <jmoyer@redhat.com> Fixes:f2fed441c6("loop: stop using vfs_iter_{read,write} for buffered I/O") Fixes:bc07c10a36("block: loop: support DIO & AIO") Signed-off-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250527153405.837216-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>