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fs: simplify dio_bio_complete 

Only read bio->bi_error once in the common path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2017-06-03 09:37:59 +02:00 committed by Jens Axboe
parent 4055351cdb
commit d5245d7674
1 changed files with 2 additions and 4 deletions
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6
fs/direct-io.c
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@ -477,13 +477,12 @@ static int dio_bio_complete(struct dio *dio, struct bio *bio)
{
struct bio_vec *bvec;
unsigned i;
int err;
int err = bio->bi_error;
if (bio->bi_error)
if (err)
dio->io_error = -EIO;
if (dio->is_async && dio->op == REQ_OP_READ && dio->should_dirty) {
err = bio->bi_error;
bio_check_pages_dirty(bio); /* transfers ownership */
} else {
bio_for_each_segment_all(bvec, bio, i) {
@ -494,7 +493,6 @@ static int dio_bio_complete(struct dio *dio, struct bio *bio)
set_page_dirty_lock(page);
put_page(page);
}
err = bio->bi_error;
bio_put(bio);
}
return err;