[PATCH v4 09/27] nilfs2: set the mapping error when calling SetPageError on writeback

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In a later patch, we're going to want to make the fsync codepath not do
a TestClearPageError call as that can override the error set in the
address space. To do that though, we need to ensure that filesystems
that are relying on the PG_error bit for reporting writeback errors
also set an error in the address space.

Ensure that this is set in nilfs2.

Acked-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 fs/nilfs2/segment.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index febed1217b3f..612d4b446793 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -1745,6 +1745,7 @@ static void nilfs_end_page_io(struct page *page, int err)
 	} else {
 		__set_page_dirty_nobuffers(page);
 		SetPageError(page);
+		mapping_set_error(page_mapping(page), err);
 	}
 
 	end_page_writeback(page);
-- 
2.9.3

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