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iomap: micro optimize the ki_pos assignment in iomap_file_buffered_write

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We have the new value for ki_pos right at hand in iter.pos, so assign
that instead of recalculating it from ret.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.harjani@gmail.com>
This commit is contained in:
Christoph Hellwig 2023-07-17 08:49:57 -07:00 committed by Darrick J. Wong
parent 20c64ec83a
commit efa96cc997
1 changed files with 1 additions and 1 deletions
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2
fs/iomap/buffered-io.c
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@ -875,7 +875,7 @@ iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i,
if (unlikely(iter.pos == iocb->ki_pos))
return ret;
ret = iter.pos - iocb->ki_pos;
iocb->ki_pos += ret;
iocb->ki_pos = iter.pos;
return ret;
}
EXPORT_SYMBOL_GPL(iomap_file_buffered_write);