btrfs: rename __btrfs_map_block to btrfs_map_block

Now that the old btrfs_map_block is gone, drop the leading underscores
from __btrfs_map_block.
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/bio.c

@@ -623,7 +623,7 @@ static bool btrfs_submit_chunk(struct btrfs_bio *bbio, int mirror_num)
 	int error;
 
 	btrfs_bio_counter_inc_blocked(fs_info);
-	error = __btrfs_map_block(fs_info, btrfs_op(bio), logical, &map_length,
+	error = btrfs_map_block(fs_info, btrfs_op(bio), logical, &map_length,
 				&bioc, &smap, &mirror_num, 1);
 	if (error) {
 		ret = errno_to_blk_status(error);

fs/btrfs/check-integrity.c

@@ -1464,7 +1464,7 @@ static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
 	struct btrfs_device *device;
 
 	length = len;
-	ret = __btrfs_map_block(fs_info, BTRFS_MAP_READ, bytenr, &length, &bioc,
+	ret = btrfs_map_block(fs_info, BTRFS_MAP_READ, bytenr, &length, &bioc,
 			      NULL, &mirror_num, 0);
 	if (ret) {
 		block_ctx_out->start = 0;

fs/btrfs/dev-replace.c

@@ -41,7 +41,7 @@
  *   All new writes will be written to both target and source devices, so even
  *   if replace gets canceled, sources device still contains up-to-date data.
  *
- *   Location:		handle_ops_on_dev_replace() from __btrfs_map_block()
+ *   Location:		handle_ops_on_dev_replace() from btrfs_map_block()
  *   Start:		btrfs_dev_replace_start()
  *   End:		btrfs_dev_replace_finishing()
  *   Content:		Latest data/metadata

fs/btrfs/volumes.c

@@ -6232,7 +6232,7 @@ static void set_io_stripe(struct btrfs_io_stripe *dst, const struct map_lookup *
 			stripe_offset + (stripe_nr << BTRFS_STRIPE_LEN_SHIFT);
 }
 
-int __btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
+int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		    u64 logical, u64 *length,
 		    struct btrfs_io_context **bioc_ret,
 		    struct btrfs_io_stripe *smap, int *mirror_num_ret,
@@ -6486,7 +6486,7 @@ int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		     u64 logical, u64 *length,
 		     struct btrfs_io_context **bioc_ret)
 {
-	return __btrfs_map_block(fs_info, op, logical, length, bioc_ret,
+	return btrfs_map_block(fs_info, op, logical, length, bioc_ret,
 				 NULL, NULL, 1);
 }
 
@@ -8066,7 +8066,7 @@ int btrfs_map_repair_block(struct btrfs_fs_info *fs_info,
 
 	ASSERT(mirror_num > 0);
 
-	ret = __btrfs_map_block(fs_info, BTRFS_MAP_WRITE, logical, &map_length,
+	ret = btrfs_map_block(fs_info, BTRFS_MAP_WRITE, logical, &map_length,
 			      &bioc, smap, &mirror_ret, true);
 	if (ret < 0)
 		return ret;

fs/btrfs/volumes.h

@@ -585,7 +585,7 @@ void btrfs_put_bioc(struct btrfs_io_context *bioc);
 int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		     u64 logical, u64 *length,
 		     struct btrfs_io_context **bioc_ret);
-int __btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
+int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		    u64 logical, u64 *length,
 		    struct btrfs_io_context **bioc_ret,
 		    struct btrfs_io_stripe *smap, int *mirror_num_ret,