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block: reset bi_iter.bi_done after splitting bio

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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>
This commit is contained in:
Greg Edwards 2018-07-26 14:39:37 -04:00 committed by Jens Axboe
parent 17d51b10d7
commit 5151842b9d
1 changed files with 1 additions and 0 deletions
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block/bio.c
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@ -1893,6 +1893,7 @@ struct bio *bio_split(struct bio *bio, int sectors,
bio_integrity_trim(split); bio_integrity_trim(split);
bio_advance(bio, split->bi_iter.bi_size); bio_advance(bio, split->bi_iter.bi_size);
bio->bi_iter.bi_done = 0;
if (bio_flagged(bio, BIO_TRACE_COMPLETION)) if (bio_flagged(bio, BIO_TRACE_COMPLETION))
bio_set_flag(split, BIO_TRACE_COMPLETION); bio_set_flag(split, BIO_TRACE_COMPLETION);