block: rename bio bi_rw to bi_opf
Since commit 63a4cc24867d, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.
No intended functional changes in this commit.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 026d133..bcdb2b4 100644
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -269,7 +269,7 @@
requests which haven't aged too much on the queue. Potentially this priority
could even be exposed to applications in some manner, providing higher level
tunability. Time based aging avoids starvation of lower priority
- requests. Some bits in the bi_rw flags field in the bio structure are
+ requests. Some bits in the bi_opf flags field in the bio structure are
intended to be used for this priority information.
@@ -432,7 +432,7 @@
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev; /* target device */
unsigned long bi_flags; /* status, command, etc */
- unsigned long bi_rw; /* low bits: r/w, high: priority */
+ unsigned long bi_opf; /* low bits: r/w, high: priority */
unsigned int bi_vcnt; /* how may bio_vec's */
struct bvec_iter bi_iter; /* current index into bio_vec array */