diff options
| author | Jason Yan <yanaijie@huawei.com> | 2019-04-12 10:09:16 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-04-11 21:22:21 -0600 |
| commit | a89afe58f1a74aac768a5eb77af95ef4ee15beaa (patch) | |
| tree | f4ca4eb4bc4793646997856ccae8f03be3cd4f41 /fs/read_write.c | |
| parent | c0c14e935032abd6ee6828840a83df1de49d4838 (diff) | |
block: fix the return errno for direct IO
If the last bio returned is not dio->bio, the status of the bio will
not assigned to dio->bio if it is error. This will cause the whole IO
status wrong.
ksoftirqd/21-117 [021] ..s. 4017.966090: 8,0 C N 4883648 [0]
<idle>-0 [018] ..s. 4017.970888: 8,0 C WS 4924800 + 1024 [0]
<idle>-0 [018] ..s. 4017.970909: 8,0 D WS 4935424 + 1024 [<idle>]
<idle>-0 [018] ..s. 4017.970924: 8,0 D WS 4936448 + 321 [<idle>]
ksoftirqd/21-117 [021] ..s. 4017.995033: 8,0 C R 4883648 + 336 [65475]
ksoftirqd/21-117 [021] d.s. 4018.001988: myprobe1: (blkdev_bio_end_io+0x0/0x168) bi_status=7
ksoftirqd/21-117 [021] d.s. 4018.001992: myprobe: (aio_complete_rw+0x0/0x148) x0=0xffff802f2595ad80 res=0x12a000 res2=0x0
We always have to assign bio->bi_status to dio->bio.bi_status because we
will only check dio->bio.bi_status when we return the whole IO to
the upper layer.
Fixes: 542ff7bf18c6 ("block: new direct I/O implementation")
Cc: stable@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/read_write.c')
0 files changed, 0 insertions, 0 deletions