Commit 5151842b authored Jul 26, 2018 by Greg Edwards Committed by Jens Axboe Jul 27, 2018

block: reset bi_iter.bi_done after splitting bio



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: 63573e35 ("bio-integrity: Restore original iterator on verify stage")
Signed-off-by: Greg Edwards <gedwards@ddn.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 17d51b10

block/bio.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1893,6 +1893,7 @@ struct bio bio_split(struct bio bio, int sectors,
		bio_integrity_trim(split);

		bio_advance(bio, split->bi_iter.bi_size);
		bio->bi_iter.bi_done = 0;

		if (bio_flagged(bio, BIO_TRACE_COMPLETION))
		bio_set_flag(split, BIO_TRACE_COMPLETION);

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