Re: [PATCH] fs: Return EOPNOTSUPP if block layer does not support REQ_NOWAIT

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On 12/13/18 4:24 PM, Christoph Hellwig wrote:

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
---
   fs/direct-io.c | 11 +++++++----
   1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/fs/direct-io.c b/fs/direct-io.c
index 41a0e97252ae..77adf33916b8 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -542,10 +542,13 @@ static blk_status_t dio_bio_complete(struct dio *dio, struct bio *bio)
   	blk_status_t err = bio->bi_status;
   	if (err) {
I think this just need to become:

	if (err)
		dio->io_error = blk_status_to_errno(bio->bi_status);

And Avi, you really should be using XFS ;-)


I did see this on XFS too. The whole thing bothers me, it doesn't happen consistently in some setups, which I don't understand. Either it should trigger always or never.




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