[PATCH v3 06/20] dax: set errors in mapping when writeback fails

Jeff Layton <[email protected]>
Newsgroups gmane.comp.file-systems.jfs.general
Message-ID <20170424132259.8680-7-jlayton__42088.2621467628$1493044006$gmane$org@redhat.com>
In order to get proper error codes from fsync, we must set an error in
the mapping range when writeback fails.

Signed-off-by: Jeff Layton <[email protected]>
---
 fs/dax.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/dax.c b/fs/dax.c
index 85abd741253d..9b6b04030c3f 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -901,8 +901,10 @@ int dax_writeback_mapping_range(struct address_space *mapping,
 
 			ret = dax_writeback_one(bdev, mapping, indices[i],
 					pvec.pages[i]);
-			if (ret < 0)
+			if (ret < 0) {
+				mapping_set_error(mapping, ret);
 				return ret;
+			}
 		}
 	}
 	return 0;
-- 
2.9.3


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