[PATCH v4 10/27] 9p: set mapping error when writeback fails in launder_page

[Jeff Layton]

launder_page is just writeback under the page lock. We still need to
mark the mapping for errors there when they occur.

Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 fs/9p/vfs_addr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index adaf6f6dd858..7af6e6501698 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -223,8 +223,11 @@ static int v9fs_launder_page(struct page *page)
 	v9fs_fscache_wait_on_page_write(inode, page);
 	if (clear_page_dirty_for_io(page)) {
 		retval = v9fs_vfs_writepage_locked(page);
-		if (retval)
+		if (retval) {
+			if (retval != -EAGAIN)
+				mapping_set_error(page->mapping, retval);
 			return retval;
+		}
 	}
 	return 0;
 }
-- 
2.9.3