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authorChristoph Hellwig <hch@lst.de>2017-06-03 09:38:00 +0200
committerJens Axboe <axboe@fb.com>2017-06-09 09:27:32 -0600
commit36ffc6c1c0e67acdacb53348350d0a37206dbadf (patch)
tree96661f7c76308bc4b0e58f5b8c5537a91cd0a5fa /fs/block_dev.c
parentd5245d7674d3f026a3178657936759d572d2d5d8 (diff)
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block_dev: propagate bio_iov_iter_get_pages error in __blkdev_direct_IO
Once we move the block layer to its own status code we'll still want to propagate the bio_iov_iter_get_pages, so restructure __blkdev_direct_IO to take ret into account when returning the errno. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/block_dev.c')
-rw-r--r--fs/block_dev.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 519599dddd36..c1dc393ad6b9 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -334,7 +334,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
bool is_read = (iov_iter_rw(iter) == READ), is_sync;
loff_t pos = iocb->ki_pos;
blk_qc_t qc = BLK_QC_T_NONE;
- int ret;
+ int ret = 0;
if ((pos | iov_iter_alignment(iter)) &
(bdev_logical_block_size(bdev) - 1))
@@ -363,7 +363,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
ret = bio_iov_iter_get_pages(bio, iter);
if (unlikely(ret)) {
- bio->bi_error = ret;
+ bio->bi_error = -EIO;
bio_endio(bio);
break;
}
@@ -412,7 +412,8 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
}
__set_current_state(TASK_RUNNING);
- ret = dio->bio.bi_error;
+ if (!ret)
+ ret = dio->bio.bi_error;
if (likely(!ret))
ret = dio->size;