btrfs: check-integrity: remove btrfsic_check_bio() function

The function btrfsic_check_bio() is part of the deprecated
check-integrity functionality.

Now let's remove the main entry point of check-integrity, and thankfully
most of the check-integrity code is self-contained inside
check-integrity.c, we can safely remove the function without huge
changes to btrfs code base.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/bio.c

@@ -463,8 +463,6 @@ static void btrfs_submit_dev_bio(struct btrfs_device *dev, struct bio *bio)
 		(unsigned long)dev->bdev->bd_dev, btrfs_dev_name(dev),
 		dev->devid, bio->bi_iter.bi_size);
 
-	btrfsic_check_bio(bio);
-
 	if (bio->bi_opf & REQ_BTRFS_CGROUP_PUNT)
 		blkcg_punt_bio_submit(bio);
 	else
@@ -779,8 +777,6 @@ int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
 	bio_init(&bio, smap.dev->bdev, &bvec, 1, REQ_OP_WRITE | REQ_SYNC);
 	bio.bi_iter.bi_sector = smap.physical >> SECTOR_SHIFT;
 	__bio_add_page(&bio, page, length, pg_offset);
-
-	btrfsic_check_bio(&bio);
 	ret = submit_bio_wait(&bio);
 	if (ret) {
 		/* try to remap that extent elsewhere? */

fs/btrfs/check-integrity.h

@@ -6,12 +6,6 @@
 #ifndef BTRFS_CHECK_INTEGRITY_H
 #define BTRFS_CHECK_INTEGRITY_H
 
-#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
-void btrfsic_check_bio(struct bio *bio);
-#else
-static inline void btrfsic_check_bio(struct bio *bio) { }
-#endif
-
 int btrfsic_mount(struct btrfs_fs_info *fs_info,
 		  struct btrfs_fs_devices *fs_devices,
 		  int including_extent_data, u32 print_mask);

fs/btrfs/disk-io.c

@@ -3822,8 +3822,6 @@ static int write_dev_supers(struct btrfs_device *device,
 		 */
 		if (i == 0 && !btrfs_test_opt(device->fs_info, NOBARRIER))
 			bio->bi_opf |= REQ_FUA;
-
-		btrfsic_check_bio(bio);
 		submit_bio(bio);
 
 		if (btrfs_advance_sb_log(device, i))
@@ -3939,8 +3937,6 @@ static void write_dev_flush(struct btrfs_device *device)
 	bio->bi_end_io = btrfs_end_empty_barrier;
 	init_completion(&device->flush_wait);
 	bio->bi_private = &device->flush_wait;
-
-	btrfsic_check_bio(bio);
 	submit_bio(bio);
 	set_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state);
 }