block: reset bi_iter.bi_done after splitting bio
authorGreg Edwards <gedwards@ddn.com>
Thu, 26 Jul 2018 18:39:37 +0000 (14:39 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 3 Aug 2018 05:50:42 +0000 (07:50 +0200)
commitb8088c524ae21dc97c86e09f0e41bb419804b5ad
tree6da572083af3f5f67c9dae91d87640eda9b3c274
parentcc5d7097ba8f46a9b5382edba733e5a8705145ba
block: reset bi_iter.bi_done after splitting bio

commit 5151842b9d8732d4cbfa8400b40bff894f501b2f 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: 63573e359d05 ("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>
block/bio.c