Since commit 87374179 ("block: add a proper block layer data direction
encoding") we only OR the new op and flags into bi_opf in bio_set_op_attrs
instead of clearing the old value.  I've not seen any breakage with the
new behavior, but it seems dangerous.

Signed-off-by: Christoph Hellwig <[email protected]>
---
 include/linux/blk_types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 562ac46..67434fd 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -208,7 +208,7 @@ enum req_flag_bits {
 
 /* obsolete, don't use in new code */
 #define bio_set_op_attrs(bio, op, op_flags) \
-       ((bio)->bi_opf |= (op | op_flags))
+       ((bio)->bi_opf = op | op_flags)
 
 static inline bool op_is_write(unsigned int op)
 {
-- 
2.1.4

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