From: Mike Christie <redacted>

This has callers of submit_bio/submit_bio_wait set the bio->bi_rw
instead of passing it in. This makes that use the same as
generic_make_request and how we set the other bio fields.

Signed-off-by: Mike Christie <redacted>
---
 block/bio.c                         |  7 +++----
 block/blk-core.c                    | 11 ++++-------
 block/blk-flush.c                   |  3 ++-
 block/blk-lib.c                     |  9 ++++++---
 drivers/block/drbd/drbd_actlog.c    |  2 +-
 drivers/block/drbd/drbd_bitmap.c    |  4 ++--
 drivers/block/floppy.c              |  3 ++-
 drivers/block/xen-blkback/blkback.c |  4 +++-
 drivers/block/xen-blkfront.c        |  4 ++--
 drivers/md/bcache/debug.c           |  6 ++++--
 drivers/md/bcache/journal.c         |  2 +-
 drivers/md/bcache/super.c           |  4 ++--
 drivers/md/dm-bufio.c               |  3 ++-
 drivers/md/dm-io.c                  |  3 ++-
 drivers/md/dm-log-writes.c          |  9 ++++++---
 drivers/md/dm-thin.c                |  3 ++-
 drivers/md/md.c                     | 10 +++++++---
 drivers/md/raid1.c                  |  3 ++-
 drivers/md/raid10.c                 |  4 +++-
 drivers/md/raid5-cache.c            |  7 ++++---
 drivers/target/target_core_iblock.c | 24 +++++++++++++-----------
 fs/btrfs/check-integrity.c          | 18 ++++++++++--------
 fs/btrfs/check-integrity.h          |  4 ++--
 fs/btrfs/disk-io.c                  |  3 ++-
 fs/btrfs/extent_io.c                |  7 ++++---
 fs/btrfs/raid56.c                   | 16 +++++++++++-----
 fs/btrfs/scrub.c                    | 16 +++++++++++-----
 fs/btrfs/volumes.c                  | 14 +++++++-------
 fs/buffer.c                         |  3 ++-
 fs/direct-io.c                      |  3 ++-
 fs/ext4/crypto.c                    |  3 ++-
 fs/ext4/page-io.c                   |  3 ++-
 fs/ext4/readpage.c                  |  9 +++++----
 fs/f2fs/data.c                      | 13 ++++++++-----
 fs/f2fs/segment.c                   |  6 ++++--
 fs/gfs2/lops.c                      |  3 ++-
 fs/gfs2/meta_io.c                   |  3 ++-
 fs/gfs2/ops_fstype.c                |  3 ++-
 fs/hfsplus/wrapper.c                |  3 ++-
 fs/jfs/jfs_logmgr.c                 |  6 ++++--
 fs/jfs/jfs_metapage.c               | 10 ++++++----
 fs/logfs/dev_bdev.c                 | 15 ++++++++++-----
 fs/mpage.c                          |  3 ++-
 fs/nfs/blocklayout/blocklayout.c    | 22 ++++++++++++----------
 fs/nilfs2/segbuf.c                  |  3 ++-
 fs/ocfs2/cluster/heartbeat.c        | 12 +++++++-----
 fs/xfs/xfs_aops.c                   |  3 ++-
 fs/xfs/xfs_buf.c                    |  4 ++--
 include/linux/bio.h                 |  2 +-
 include/linux/fs.h                  |  2 +-
 kernel/power/swap.c                 |  5 +++--
 mm/page_io.c                        | 10 ++++++----
 52 files changed, 211 insertions(+), 141 deletions(-)

diff --git a/block/bio.c b/block/bio.c
index dbabd48..921112b 100644
--- a/block/bio.c
+++ b/block/bio.c

@@ -859,21 +859,20 @@ static void submit_bio_wait_endio(struct bio *bio)
 
 /**
  * submit_bio_wait - submit a bio, and wait until it completes
- * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead)
  * @bio: The &struct bio which describes the I/O
  *
  * Simple wrapper around submit_bio(). Returns 0 on success, or the error from
  * bio_endio() on failure.
  */
-int submit_bio_wait(int rw, struct bio *bio)
+int submit_bio_wait(struct bio *bio)
 {
 	struct submit_bio_ret ret;
 
-	rw |= REQ_SYNC;
 	init_completion(&ret.event);
 	bio->bi_private = &ret;
 	bio->bi_end_io = submit_bio_wait_endio;
-	submit_bio(rw, bio);
+	bio->bi_rw |= REQ_SYNC;
+	submit_bio(bio);
 	wait_for_completion(&ret.event);
 
 	return ret.error;

diff --git a/block/blk-core.c b/block/blk-core.c
index ab51685..9b887e3 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c

@@ -2092,7 +2092,6 @@ EXPORT_SYMBOL(generic_make_request);
 
 /**
  * submit_bio - submit a bio to the block device layer for I/O
- * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead)
  * @bio: The &struct bio which describes the I/O
  *
  * submit_bio() is very similar in purpose to generic_make_request(), and

@@ -2100,10 +2099,8 @@ EXPORT_SYMBOL(generic_make_request);
  * interfaces; @bio must be presetup and ready for I/O.
  *
  */
-blk_qc_t submit_bio(int rw, struct bio *bio)
+blk_qc_t submit_bio(struct bio *bio)
 {
-	bio->bi_rw |= rw;
-
 	/*
 	 * If it's a regular read/write or a barrier with data attached,
 	 * go through the normal accounting stuff before submission.

@@ -2111,12 +2108,12 @@ blk_qc_t submit_bio(int rw, struct bio *bio)
 	if (bio_has_data(bio)) {
 		unsigned int count;
 
-		if (unlikely(rw & REQ_WRITE_SAME))
+		if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
 			count = bdev_logical_block_size(bio->bi_bdev) >> 9;
 		else
 			count = bio_sectors(bio);
 
-		if (rw & WRITE) {
+		if (bio->bi_rw & WRITE) {
 			count_vm_events(PGPGOUT, count);
 		} else {
 			task_io_account_read(bio->bi_iter.bi_size);

@@ -2127,7 +2124,7 @@ blk_qc_t submit_bio(int rw, struct bio *bio)
 			char b[BDEVNAME_SIZE];
 			printk(KERN_DEBUG "%s(%d): %s block %Lu on %s (%u sectors)\n",
 			current->comm, task_pid_nr(current),
-				(rw & WRITE) ? "WRITE" : "READ",
+				(bio->bi_rw & WRITE) ? "WRITE" : "READ",
 				(unsigned long long)bio->bi_iter.bi_sector,
 				bdevname(bio->bi_bdev, b),
 				count);

diff --git a/block/blk-flush.c b/block/blk-flush.c
index 9c423e5..e092e13 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c

@@ -484,8 +484,9 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
 
 	bio = bio_alloc(gfp_mask, 0);
 	bio->bi_bdev = bdev;
+	bio->bi_rw |= WRITE_FLUSH;