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block: switch bios to blk_status_t

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Replace bi_error with a new bi_status to allow for a clear conversion.
Note that device mapper overloaded bi_error with a private value, which
we'll have to keep arround at least for now and thus propagate to a
proper blk_status_t value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2017-06-03 09:38:06 +02:00 • committed by Jens Axboe
parent fc17b6534e
commit 4e4cbee93d
106 changed files with 625 additions and 603 deletions
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8
fs/direct-io.c
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@ -294,7 +294,7 @@ static void dio_aio_complete_work(struct work_struct *work)
dio_complete(dio, 0, true);
}
static int dio_bio_complete(struct dio *dio, struct bio *bio);
static blk_status_t dio_bio_complete(struct dio *dio, struct bio *bio);
/*
* Asynchronous IO callback.
@ -473,11 +473,11 @@ static struct bio *dio_await_one(struct dio *dio)
/*
* Process one completed BIO. No locks are held.
*/
static int dio_bio_complete(struct dio *dio, struct bio *bio)
static blk_status_t dio_bio_complete(struct dio *dio, struct bio *bio)
{
struct bio_vec *bvec;
unsigned i;
int err = bio->bi_error;
blk_status_t err = bio->bi_status;
if (err)
dio->io_error = -EIO;
@ -536,7 +536,7 @@ static inline int dio_bio_reap(struct dio *dio, struct dio_submit *sdio)
bio = dio->bio_list;
dio->bio_list = bio->bi_private;
spin_unlock_irqrestore(&dio->bio_lock, flags);
ret2 = dio_bio_complete(dio, bio);
ret2 = blk_status_to_errno(dio_bio_complete(dio, bio));
if (ret == 0)
ret = ret2;
}