block, drivers, fs: shrink bi_rw from long to int

We don't need bi_rw to be so large on 64 bit archs, so
reduce it to unsigned int.

Signed-off-by: Mike Christie <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

Author: Mike Christie

block/blk-core.c

@@ -1853,7 +1853,7 @@ static void handle_bad_sector(struct bio *bio)
 	char b[BDEVNAME_SIZE];
 
 	printk(KERN_INFO "attempt to access beyond end of device\n");
-	printk(KERN_INFO "%s: rw=%ld, want=%Lu, limit=%Lu\n",
+	printk(KERN_INFO "%s: rw=%d, want=%Lu, limit=%Lu\n",
 			bdevname(bio->bi_bdev, b),
 			bio->bi_rw,
 			(unsigned long long)bio_end_sector(bio),

drivers/md/dm-flakey.c

@@ -266,7 +266,7 @@ static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
 		data[fc->corrupt_bio_byte - 1] = fc->corrupt_bio_value;
 
 		DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
-			"(rw=%c bi_rw=%lu bi_sector=%llu cur_bytes=%u)\n",
+			"(rw=%c bi_rw=%u bi_sector=%llu cur_bytes=%u)\n",
 			bio, fc->corrupt_bio_value, fc->corrupt_bio_byte,
 			(bio_data_dir(bio) == WRITE) ? 'w' : 'r', bio->bi_rw,
 			(unsigned long long)bio->bi_iter.bi_sector, bio_bytes);

drivers/md/raid5.c

@@ -1001,7 +1001,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
 				: raid5_end_read_request;
 			bi->bi_private = sh;
 
-			pr_debug("%s: for %llu schedule op %ld on disc %d\n",
+			pr_debug("%s: for %llu schedule op %d on disc %d\n",
 				__func__, (unsigned long long)sh->sector,
 				bi->bi_rw, i);
 			atomic_inc(&sh->count);
@@ -1052,7 +1052,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
 			rbi->bi_end_io = raid5_end_write_request;
 			rbi->bi_private = sh;
 
-			pr_debug("%s: for %llu schedule op %ld on "
+			pr_debug("%s: for %llu schedule op %d on "
 				 "replacement disc %d\n",
 				__func__, (unsigned long long)sh->sector,
 				rbi->bi_rw, i);
@@ -1087,7 +1087,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
 		if (!rdev && !rrdev) {
 			if (op_is_write(op))
 				set_bit(STRIPE_DEGRADED, &sh->state);
-			pr_debug("skip op %ld on disc %d for sector %llu\n",
+			pr_debug("skip op %d on disc %d for sector %llu\n",
 				bi->bi_rw, i, (unsigned long long)sh->sector);
 			clear_bit(R5_LOCKED, &sh->dev[i].flags);
 			set_bit(STRIPE_HANDLE, &sh->state);

fs/btrfs/check-integrity.c

@@ -2943,7 +2943,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
 			printk(KERN_INFO
-			       "submit_bio(rw=%d,0x%lx, bi_vcnt=%u,"
+			       "submit_bio(rw=%d,0x%x, bi_vcnt=%u,"
 			       " bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
 			       bio_op(bio), bio->bi_rw, bio->bi_vcnt,
 			       (unsigned long long)bio->bi_iter.bi_sector,
@@ -2986,7 +2986,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
 			printk(KERN_INFO
-			       "submit_bio(rw=%d,0x%lx FLUSH, bdev=%p)\n",
+			       "submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n",
 			       bio_op(bio), bio->bi_rw, bio->bi_bdev);
 		if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
 			if ((dev_state->state->print_mask &

fs/btrfs/inode.c

@@ -8184,7 +8184,7 @@ static void btrfs_end_dio_bio(struct bio *bio)
 
 	if (err)
 		btrfs_warn(BTRFS_I(dip->inode)->root->fs_info,
-			   "direct IO failed ino %llu rw %d,%lu sector %#Lx len %u err no %d",
+			   "direct IO failed ino %llu rw %d,%u sector %#Lx len %u err no %d",
 			   btrfs_ino(dip->inode), bio_op(bio), bio->bi_rw,
 			   (unsigned long long)bio->bi_iter.bi_sector,
 			   bio->bi_iter.bi_size, err);

include/linux/blk_types.h

@@ -48,7 +48,7 @@ struct bio {
 	struct block_device	*bi_bdev;
 	unsigned int		bi_flags;	/* status, command, etc */
 	int			bi_error;
-	unsigned long		bi_rw;		/* READ/WRITE */
+	unsigned int		bi_rw;		/* READ/WRITE */
 	unsigned short		bi_ioprio;
 
 	struct bvec_iter	bi_iter;