iomap: advance the iter directly on buffered read

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iomap buffered read advances the iter via iter.processed. To
continue separating iter advance from return status, update
iomap_readpage_iter() to advance the iter instead of returning the
number of bytes processed. In turn, drop the offset parameter and
sample the updated iter->pos at the start of the function. Update
the callers to loop based on remaining length in the current
iteration instead of number of bytes processed.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Link: https://lore.kernel.org/r/20250224144757.237706-2-bfoster@redhat.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Brian Foster 2025-02-24 09:47:46 -05:00 • committed by Christian Brauner

parent 30f5300961

commit d9dc477ff6

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fs/iomap/buffered-io.c

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