From: Christoph Hellwig <hch@lst.de>
Date: Tue, 19 Jul 2016 09:23:34 +0000 (+0200)
Subject: block: don't ignore -EOPNOTSUPP blkdev_issue_write_same
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3f40bf2c89223192535a72a4d49ce7d68d8ed9dd;p=linux-beck.git

block: don't ignore -EOPNOTSUPP blkdev_issue_write_same

WRITE SAME is a data integrity operation and we can't simply ignore
errors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-lib.c b/block/blk-lib.c
index 45b35b15496f..e371f83a3186 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -178,7 +178,7 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
 
 	if (bio)
 		ret = submit_bio_wait(bio);
-	return ret != -EOPNOTSUPP ? ret : 0;
+	return ret;
 }
 EXPORT_SYMBOL(blkdev_issue_write_same);