[PATCH] fs-writeback.c: bitfields should be unsigned

[H Hartley Sweeten <hartleys@xxxxxxxxxxxxxxxxxxx>]

This fixes sparse noise:
  error: dubious one-bit signed bitfield

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>

---

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 76fc4d5..a25f491 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -41,9 +41,9 @@ struct wb_writeback_args {
 	long nr_pages;
 	struct super_block *sb;
 	enum writeback_sync_modes sync_mode;
-	int for_kupdate:1;
-	int range_cyclic:1;
-	int for_background:1;
+	unsigned int for_kupdate:1;
+	unsigned int range_cyclic:1;
+	unsigned int for_background:1;
 };
 
 /*
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