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block: reset bi_iter.bi_done after splitting bio
commit5151842b9d
upstream. After the bio has been updated to represent the remaining sectors, reset bi_done so bio_rewind_iter() does not rewind further than it should. This resolves a bio_integrity_process() failure on reads where the original request was split. Fixes:63573e359d
("bio-integrity: Restore original iterator on verify stage") Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1889,6 +1889,7 @@ struct bio *bio_split(struct bio *bio, int sectors,
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bio_integrity_trim(split);
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bio_advance(bio, split->bi_iter.bi_size);
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bio->bi_iter.bi_done = 0;
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if (bio_flagged(bio, BIO_TRACE_COMPLETION))
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bio_set_flag(split, BIO_TRACE_COMPLETION);
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