block: Remove forced page bouncing under IO
JBD layer wrote back data buffers without setting PageWriteback bit.
Thus standard mechanism for guaranteeing stable pages under IO did not
work. Since JBD is gone now and there is no other user of the
functionality, just remove it.
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 7303b34..89fd491 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -118,9 +118,8 @@
#define BIO_USER_MAPPED 4 /* contains user pages */
#define BIO_NULL_MAPPED 5 /* contains invalid user pages */
#define BIO_QUIET 6 /* Make BIO Quiet */
-#define BIO_SNAP_STABLE 7 /* bio data must be snapshotted during write */
-#define BIO_CHAIN 8 /* chained bio, ->bi_remaining in effect */
-#define BIO_REFFED 9 /* bio has elevated ->bi_cnt */
+#define BIO_CHAIN 7 /* chained bio, ->bi_remaining in effect */
+#define BIO_REFFED 8 /* bio has elevated ->bi_cnt */
/*
* Flags starting here get preserved by bio_reset() - this includes