btrfs: convert printk(KERN_* to use pr_* calls

This patch converts printk(KERN_* style messages to use the pr_* versions.

One side effect is that anything that was KERN_DEBUG is now automatically
a dynamic debug message.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 106 insertions, 166 deletions

diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index d6a5a6eebd11..8e99251650b3 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -656,7 +656,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 	BUG_ON(NULL == state);
 	selected_super = kzalloc(sizeof(*selected_super), GFP_NOFS);
 	if (NULL == selected_super) {
-		printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+		pr_info("btrfsic: error, kmalloc failed!\n");
 		return -ENOMEM;
 	}
 
@@ -681,7 +681,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 	}
 
 	if (NULL == state->latest_superblock) {
-		printk(KERN_INFO "btrfsic: no superblock found!\n");
+		pr_info("btrfsic: no superblock found!\n");
 		kfree(selected_super);
 		return -1;
 	}
@@ -698,13 +698,13 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 			next_bytenr = btrfs_super_root(selected_super);
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "root@%llu\n", next_bytenr);
+				pr_info("root@%llu\n", next_bytenr);
 			break;
 		case 1:
 			next_bytenr = btrfs_super_chunk_root(selected_super);
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "chunk@%llu\n", next_bytenr);
+				pr_info("chunk@%llu\n", next_bytenr);
 			break;
 		case 2:
 			next_bytenr = btrfs_super_log_root(selected_super);
@@ -712,7 +712,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 				continue;
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "log@%llu\n", next_bytenr);
+				pr_info("log@%llu\n", next_bytenr);
 			break;
 		}
 
@@ -720,7 +720,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 		    btrfs_num_copies(state->root->fs_info,
 				     next_bytenr, state->metablock_size);
 		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
-			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			pr_info("num_copies(log_bytenr=%llu) = %d\n",
 			       next_bytenr, num_copies);
 
 		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
@@ -733,7 +733,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 						&tmp_next_block_ctx,
 						mirror_num);
 			if (ret) {
-				printk(KERN_INFO "btrfsic: btrfsic_map_block(root @%llu, mirror %d) failed!\n",
+				pr_info("btrfsic: btrfsic_map_block(root @%llu, mirror %d) failed!\n",
 				       next_bytenr, mirror_num);
 				kfree(selected_super);
 				return -1;
@@ -756,8 +756,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
 
 			ret = btrfsic_read_block(state, &tmp_next_block_ctx);
 			if (ret < (int)PAGE_SIZE) {
-				printk(KERN_INFO
-				       "btrfsic: read @logical %llu failed!\n",
+				pr_info("btrfsic: read @logical %llu failed!\n",
 				       tmp_next_block_ctx.start);
 				btrfsic_release_block_ctx(&tmp_next_block_ctx);
 				kfree(selected_super);
@@ -818,7 +817,7 @@ static int btrfsic_process_superblock_dev_mirror(
 	if (NULL == superblock_tmp) {
 		superblock_tmp = btrfsic_block_alloc();
 		if (NULL == superblock_tmp) {
-			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			pr_info("btrfsic: error, kmalloc failed!\n");
 			brelse(bh);
 			return -1;
 		}
@@ -892,7 +891,7 @@ static int btrfsic_process_superblock_dev_mirror(
 		    btrfs_num_copies(state->root->fs_info,
 				     next_bytenr, state->metablock_size);
 		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
-			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			pr_info("num_copies(log_bytenr=%llu) = %d\n",
 			       next_bytenr, num_copies);
 		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
 			struct btrfsic_block *next_block;
@@ -903,7 +902,7 @@ static int btrfsic_process_superblock_dev_mirror(
 					      state->metablock_size,
 					      &tmp_next_block_ctx,
 					      mirror_num)) {
-				printk(KERN_INFO "btrfsic: btrfsic_map_block(bytenr @%llu, mirror %d) failed!\n",
+				pr_info("btrfsic: btrfsic_map_block(bytenr @%llu, mirror %d) failed!\n",
 				       next_bytenr, mirror_num);
 				brelse(bh);
 				return -1;
@@ -945,7 +944,7 @@ static struct btrfsic_stack_frame *btrfsic_stack_frame_alloc(void)
 
 	sf = kzalloc(sizeof(*sf), GFP_NOFS);
 	if (NULL == sf)
-		printk(KERN_INFO "btrfsic: alloc memory failed!\n");
+		pr_info("btrfsic: alloc memory failed!\n");
 	else
 		sf->magic = BTRFSIC_BLOCK_STACK_FRAME_MAGIC_NUMBER;
 	return sf;
@@ -991,8 +990,7 @@ continue_with_new_stack_frame:
 			sf->nr = btrfs_stack_header_nritems(&leafhdr->header);
 
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO
-				       "leaf %llu items %d generation %llu owner %llu\n",
+				pr_info("leaf %llu items %d generation %llu owner %llu\n",
 				       sf->block_ctx->start, sf->nr,
 				       btrfs_stack_header_generation(
 					       &leafhdr->header),
@@ -1019,8 +1017,7 @@ continue_with_current_leaf_stack_frame:
 			if (disk_item_offset + sizeof(struct btrfs_item) >
 			    sf->block_ctx->len) {
 leaf_item_out_of_bounce_error:
-				printk(KERN_INFO
-				       "btrfsic: leaf item out of bounce at logical %llu, dev %s\n",
+				pr_info("btrfsic: leaf item out of bounce at logical %llu, dev %s\n",
 				       sf->block_ctx->start,
 				       sf->block_ctx->dev->name);
 				goto one_stack_frame_backwards;
@@ -1116,7 +1113,7 @@ leaf_item_out_of_bounce_error:
 			sf->nr = btrfs_stack_header_nritems(&nodehdr->header);
 
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO "node %llu level %d items %d generation %llu owner %llu\n",
+				pr_info("node %llu level %d items %d generation %llu owner %llu\n",
 				       sf->block_ctx->start,
 				       nodehdr->header.level, sf->nr,
 				       btrfs_stack_header_generation(
@@ -1140,8 +1137,7 @@ continue_with_current_node_stack_frame:
 					  (uintptr_t)nodehdr;
 			if (key_ptr_offset + sizeof(struct btrfs_key_ptr) >
 			    sf->block_ctx->len) {
-				printk(KERN_INFO
-				       "btrfsic: node item out of bounce at logical %llu, dev %s\n",
+				pr_info("btrfsic: node item out of bounce at logical %llu, dev %s\n",
 				       sf->block_ctx->start,
 				       sf->block_ctx->dev->name);
 				goto one_stack_frame_backwards;
@@ -1270,7 +1266,7 @@ static int btrfsic_create_link_to_next_block(
 		    btrfs_num_copies(state->root->fs_info,
 				     next_bytenr, state->metablock_size);
 		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
-			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			pr_info("num_copies(log_bytenr=%llu) = %d\n",
 			       next_bytenr, *num_copiesp);
 		*mirror_nump = 1;
 	}
@@ -1279,15 +1275,13 @@ static int btrfsic_create_link_to_next_block(
 		return 0;
 
 	if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-		printk(KERN_INFO
-		       "btrfsic_create_link_to_next_block(mirror_num=%d)\n",
+		pr_info("btrfsic_create_link_to_next_block(mirror_num=%d)\n",
 		       *mirror_nump);
 	ret = btrfsic_map_block(state, next_bytenr,
 				state->metablock_size,
 				next_block_ctx, *mirror_nump);
 	if (ret) {
-		printk(KERN_INFO
-		       "btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
+		pr_info("btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
 		       next_bytenr, *mirror_nump);
 		btrfsic_release_block_ctx(next_block_ctx);
 		*next_blockp = NULL;
@@ -1313,16 +1307,14 @@ static int btrfsic_create_link_to_next_block(
 			if (next_block->logical_bytenr != next_bytenr &&
 			    !(!next_block->is_metadata &&
 			      0 == next_block->logical_bytenr))
-				printk(KERN_INFO
-				       "Referenced block @%llu (%s/%llu/%d) found in hash table, %c, bytenr mismatch (!= stored %llu).\n",
+				pr_info("Referenced block @%llu (%s/%llu/%d) found in hash table, %c, bytenr mismatch (!= stored %llu).\n",
 				       next_bytenr, next_block_ctx->dev->name,
 				       next_block_ctx->dev_bytenr, *mirror_nump,
 				       btrfsic_get_block_type(state,
 							      next_block),
 				       next_block->logical_bytenr);
 			else
-				printk(KERN_INFO
-				       "Referenced block @%llu (%s/%llu/%d) found in hash table, %c.\n",
+				pr_info("Referenced block @%llu (%s/%llu/%d) found in hash table, %c.\n",
 				       next_bytenr, next_block_ctx->dev->name,
 				       next_block_ctx->dev_bytenr, *mirror_nump,
 				       btrfsic_get_block_type(state,
@@ -1343,7 +1335,7 @@ static int btrfsic_create_link_to_next_block(
 	if (NULL == l) {
 		l = btrfsic_block_link_alloc();
 		if (NULL == l) {
-			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			pr_info("btrfsic: error, kmalloc failed!\n");
 			btrfsic_release_block_ctx(next_block_ctx);
 			*next_blockp = NULL;
 			return -1;
@@ -1376,8 +1368,7 @@ static int btrfsic_create_link_to_next_block(
 	if (limit_nesting > 0 && did_alloc_block_link) {
 		ret = btrfsic_read_block(state, next_block_ctx);
 		if (ret < (int)next_block_ctx->len) {
-			printk(KERN_INFO
-			       "btrfsic: read block @logical %llu failed!\n",
+			pr_info("btrfsic: read block @logical %llu failed!\n",
 			       next_bytenr);
 			btrfsic_release_block_ctx(next_block_ctx);
 			*next_blockp = NULL;
@@ -1412,8 +1403,7 @@ static int btrfsic_handle_extent_data(
 	if (file_extent_item_offset +
 	    offsetof(struct btrfs_file_extent_item, disk_num_bytes) >
 	    block_ctx->len) {
-		printk(KERN_INFO
-		       "btrfsic: file item out of bounce at logical %llu, dev %s\n",
+		pr_info("btrfsic: file item out of bounce at logical %llu, dev %s\n",
 		       block_ctx->start, block_ctx->dev->name);
 		return -1;
 	}
@@ -1424,7 +1414,7 @@ static int btrfsic_handle_extent_data(
 	if (BTRFS_FILE_EXTENT_REG != file_extent_item.type ||
 	    btrfs_stack_file_extent_disk_bytenr(&file_extent_item) == 0) {
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
-			printk(KERN_INFO "extent_data: type %u, disk_bytenr = %llu\n",
+			pr_info("extent_data: type %u, disk_bytenr = %llu\n",
 			       file_extent_item.type,
 			       btrfs_stack_file_extent_disk_bytenr(
 			       &file_extent_item));
@@ -1433,8 +1423,7 @@ static int btrfsic_handle_extent_data(
 
 	if (file_extent_item_offset + sizeof(struct btrfs_file_extent_item) >
 	    block_ctx->len) {
-		printk(KERN_INFO
-		       "btrfsic: file item out of bounce at logical %llu, dev %s\n",
+		pr_info("btrfsic: file item out of bounce at logical %llu, dev %s\n",
 		       block_ctx->start, block_ctx->dev->name);
 		return -1;
 	}
@@ -1452,7 +1441,7 @@ static int btrfsic_handle_extent_data(
 	generation = btrfs_stack_file_extent_generation(&file_extent_item);
 
 	if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
-		printk(KERN_INFO "extent_data: type %u, disk_bytenr = %llu, offset = %llu, num_bytes = %llu\n",
+		pr_info("extent_data: type %u, disk_bytenr = %llu, offset = %llu, num_bytes = %llu\n",
 		       file_extent_item.type,
 		       btrfs_stack_file_extent_disk_bytenr(&file_extent_item),
 		       btrfs_stack_file_extent_offset(&file_extent_item),
@@ -1471,7 +1460,7 @@ static int btrfsic_handle_extent_data(
 		    btrfs_num_copies(state->root->fs_info,
 				     next_bytenr, state->datablock_size);
 		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
-			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			pr_info("num_copies(log_bytenr=%llu) = %d\n",
 			       next_bytenr, num_copies);
 		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
 			struct btrfsic_block_data_ctx next_block_ctx;
@@ -1479,17 +1468,16 @@ static int btrfsic_handle_extent_data(
 			int block_was_created;
 
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO "btrfsic_handle_extent_data(mirror_num=%d)\n", mirror_num);
+				pr_info("btrfsic_handle_extent_data(mirror_num=%d)\n",
+					mirror_num);
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
-				printk(KERN_INFO
-				       "\tdisk_bytenr = %llu, num_bytes %u\n",
+				pr_info("\tdisk_bytenr = %llu, num_bytes %u\n",
 				       next_bytenr, chunk_len);
 			ret = btrfsic_map_block(state, next_bytenr,
 						chunk_len, &next_block_ctx,
 						mirror_num);
 			if (ret) {
-				printk(KERN_INFO
-				       "btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
+				pr_info("btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
 				       next_bytenr, mirror_num);
 				return -1;
 			}
@@ -1504,8 +1492,7 @@ static int btrfsic_handle_extent_data(
 					mirror_num,
 					&block_was_created);
 			if (NULL == next_block) {
-				printk(KERN_INFO
-				       "btrfsic: error, kmalloc failed!\n");
+				pr_info("btrfsic: error, kmalloc failed!\n");
 				btrfsic_release_block_ctx(&next_block_ctx);
 				return -1;
 			}
@@ -1515,8 +1502,7 @@ static int btrfsic_handle_extent_data(
 				    next_block->logical_bytenr != next_bytenr &&
 				    !(!next_block->is_metadata &&
 				      0 == next_block->logical_bytenr)) {
-					printk(KERN_INFO
-					       "Referenced block @%llu (%s/%llu/%d) found in hash table, D, bytenr mismatch (!= stored %llu).\n",
+					pr_info("Referenced block @%llu (%s/%llu/%d) found in hash table, D, bytenr mismatch (!= stored %llu).\n",
 					       next_bytenr,
 					       next_block_ctx.dev->name,
 					       next_block_ctx.dev_bytenr,
@@ -1580,7 +1566,7 @@ static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
 	kfree(multi);
 	if (NULL == block_ctx_out->dev) {
 		ret = -ENXIO;
-		printk(KERN_INFO "btrfsic: error, cannot lookup dev (#1)!\n");
+		pr_info("btrfsic: error, cannot lookup dev (#1)!\n");
 	}
 
 	return ret;
@@ -1626,8 +1612,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
 	BUG_ON(block_ctx->pagev);
 	BUG_ON(block_ctx->mem_to_free);
 	if (block_ctx->dev_bytenr & ((u64)PAGE_SIZE - 1)) {
-		printk(KERN_INFO
-		       "btrfsic: read_block() with unaligned bytenr %llu\n",
+		pr_info("btrfsic: read_block() with unaligned bytenr %llu\n",
 		       block_ctx->dev_bytenr);
 		return -1;
 	}
@@ -1654,8 +1639,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
 
 		bio = btrfs_io_bio_alloc(GFP_NOFS, num_pages - i);
 		if (!bio) {
-			printk(KERN_INFO
-			       "btrfsic: bio_alloc() for %u pages failed!\n",
+			pr_info("btrfsic: bio_alloc() for %u pages failed!\n",
 			       num_pages - i);
 			return -1;
 		}
@@ -1670,13 +1654,11 @@ static int btrfsic_read_block(struct btrfsic_state *state,
 				break;
 		}
 		if (j == i) {
-			printk(KERN_INFO
-			       "btrfsic: error, failed to add a single page!\n");
+			pr_info("btrfsic: error, failed to add a single page!\n");
 			return -1;
 		}
 		if (submit_bio_wait(bio)) {
-			printk(KERN_INFO
-			       "btrfsic: read error at logical %llu dev %s!\n",
+			pr_info("btrfsic: read error at logical %llu dev %s!\n",
 			       block_ctx->start, block_ctx->dev->name);
 			bio_put(bio);
 			return -1;
@@ -1688,7 +1670,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
 	for (i = 0; i < num_pages; i++) {
 		block_ctx->datav[i] = kmap(block_ctx->pagev[i]);
 		if (!block_ctx->datav[i]) {
-			printk(KERN_INFO "btrfsic: kmap() failed (dev %s)!\n",
+			pr_info("btrfsic: kmap() failed (dev %s)!\n",
 			       block_ctx->dev->name);
 			return -1;
 		}
@@ -1703,17 +1685,17 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
 
 	BUG_ON(NULL == state);
 
-	printk(KERN_INFO "all_blocks_list:\n");
+	pr_info("all_blocks_list:\n");
 	list_for_each_entry(b_all, &state->all_blocks_list, all_blocks_node) {
 		const struct btrfsic_block_link *l;
 
-		printk(KERN_INFO "%c-block @%llu (%s/%llu/%d)\n",
+		pr_info("%c-block @%llu (%s/%llu/%d)\n",
 		       btrfsic_get_block_type(state, b_all),
 		       b_all->logical_bytenr, b_all->dev_state->name,
 		       b_all->dev_bytenr, b_all->mirror_num);
 
 		list_for_each_entry(l, &b_all->ref_to_list, node_ref_to) {
-			printk(KERN_INFO " %c @%llu (%s/%llu/%d) refers %u* to %c @%llu (%s/%llu/%d)\n",
+			pr_info(" %c @%llu (%s/%llu/%d) refers %u* to %c @%llu (%s/%llu/%d)\n",
 			       btrfsic_get_block_type(state, b_all),
 			       b_all->logical_bytenr, b_all->dev_state->name,
 			       b_all->dev_bytenr, b_all->mirror_num,
@@ -1726,7 +1708,7 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
 		}
 
 		list_for_each_entry(l, &b_all->ref_from_list, node_ref_from) {
-			printk(KERN_INFO " %c @%llu (%s/%llu/%d) is ref %u* from %c @%llu (%s/%llu/%d)\n",
+			pr_info(" %c @%llu (%s/%llu/%d) is ref %u* from %c @%llu (%s/%llu/%d)\n",
 			       btrfsic_get_block_type(state, b_all),
 			       b_all->logical_bytenr, b_all->dev_state->name,
 			       b_all->dev_bytenr, b_all->mirror_num,
@@ -1738,7 +1720,7 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
 			       l->block_ref_from->mirror_num);
 		}
 
-		printk(KERN_INFO "\n");
+		pr_info("\n");
 	}
 }
 
@@ -1813,8 +1795,7 @@ again:
 						    mapped_datav[0]);
 			if (num_pages * PAGE_SIZE <
 			    BTRFS_SUPER_INFO_SIZE) {
-				printk(KERN_INFO
-				       "btrfsic: cannot work with too short bios!\n");
+				pr_info("btrfsic: cannot work with too short bios!\n");
 				return;
 			}
 			is_metadata = 1;
@@ -1822,8 +1803,7 @@ again:
 			processed_len = BTRFS_SUPER_INFO_SIZE;
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_TREE_BEFORE_SB_WRITE) {
-				printk(KERN_INFO
-				       "[before new superblock is written]:\n");
+				pr_info("[before new superblock is written]:\n");
 				btrfsic_dump_tree_sub(state, block, 0);
 			}
 		}
@@ -1831,8 +1811,7 @@ again:
 			if (!block->is_superblock) {
 				if (num_pages * PAGE_SIZE <
 				    state->metablock_size) {
-					printk(KERN_INFO
-					       "btrfsic: cannot work with too short bios!\n");
+					pr_info("btrfsic: cannot work with too short bios!\n");
 					return;
 				}
 				processed_len = state->metablock_size;
@@ -1847,8 +1826,7 @@ again:
 				if (block->logical_bytenr != bytenr &&
 				    !(!block->is_metadata &&
 				      block->logical_bytenr == 0))
-					printk(KERN_INFO
-					       "Written block @%llu (%s/%llu/%d) found in hash table, %c, bytenr mismatch (!= stored %llu).\n",
+					pr_info("Written block @%llu (%s/%llu/%d) found in hash table, %c, bytenr mismatch (!= stored %llu).\n",
 					       bytenr, dev_state->name,
 					       dev_bytenr,
 					       block->mirror_num,
@@ -1856,8 +1834,7 @@ again:
 								      block),
 					       block->logical_bytenr);
 				else
-					printk(KERN_INFO
-					       "Written block @%llu (%s/%llu/%d) found in hash table, %c.\n",
+					pr_info("Written block @%llu (%s/%llu/%d) found in hash table, %c.\n",
 					       bytenr, dev_state->name,
 					       dev_bytenr, block->mirror_num,
 					       btrfsic_get_block_type(state,
@@ -1867,27 +1844,24 @@ again:
 		} else {
 			if (num_pages * PAGE_SIZE <
 			    state->datablock_size) {
-				printk(KERN_INFO
-				       "btrfsic: cannot work with too short bios!\n");
+				pr_info("btrfsic: cannot work with too short bios!\n");
 				return;
 			}
 			processed_len = state->datablock_size;
 			bytenr = block->logical_bytenr;
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO
-				       "Written block @%llu (%s/%llu/%d) found in hash table, %c.\n",
+				pr_info("Written block @%llu (%s/%llu/%d) found in hash table, %c.\n",
 				       bytenr, dev_state->name, dev_bytenr,
 				       block->mirror_num,
 				       btrfsic_get_block_type(state, block));
 		}
 
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "ref_to_list: %cE, ref_from_list: %cE\n",
+			pr_info("ref_to_list: %cE, ref_from_list: %cE\n",
 			       list_empty(&block->ref_to_list) ? ' ' : '!',
 			       list_empty(&block->ref_from_list) ? ' ' : '!');
 		if (btrfsic_is_block_ref_by_superblock(state, block, 0)) {
-			printk(KERN_INFO "btrfs: attempt to overwrite %c-block @%llu (%s/%llu/%d), old(gen=%llu, objectid=%llu, type=%d, offset=%llu), new(gen=%llu), which is referenced by most recent superblock (superblockgen=%llu)!\n",
+			pr_info("btrfs: attempt to overwrite %c-block @%llu (%s/%llu/%d), old(gen=%llu, objectid=%llu, type=%d, offset=%llu), new(gen=%llu), which is referenced by most recent superblock (superblockgen=%llu)!\n",
 			       btrfsic_get_block_type(state, block), bytenr,
 			       dev_state->name, dev_bytenr, block->mirror_num,
 			       block->generation,
@@ -1901,7 +1875,7 @@ again:
 		}
 
 		if (!block->is_iodone && !block->never_written) {
-			printk(KERN_INFO "btrfs: attempt to overwrite %c-block @%llu (%s/%llu/%d), oldgen=%llu, newgen=%llu, which is not yet iodone!\n",
+			pr_info("btrfs: attempt to overwrite %c-block @%llu (%s/%llu/%d), oldgen=%llu, newgen=%llu, which is not yet iodone!\n",
 			       btrfsic_get_block_type(state, block), bytenr,
 			       dev_state->name, dev_bytenr, block->mirror_num,
 			       block->generation,
@@ -1999,8 +1973,7 @@ again:
 						mapped_datav[0]);
 				if (state->print_mask &
 				    BTRFSIC_PRINT_MASK_TREE_AFTER_SB_WRITE) {
-					printk(KERN_INFO
-					"[after new superblock is written]:\n");
+					pr_info("[after new superblock is written]:\n");
 					btrfsic_dump_tree_sub(state, block, 0);
 				}
 			} else {
@@ -2012,8 +1985,7 @@ again:
 						0, 0);
 			}
 			if (ret)
-				printk(KERN_INFO
-				       "btrfsic: btrfsic_process_metablock(root @%llu) failed!\n",
+				pr_info("btrfsic: btrfsic_process_metablock(root @%llu) failed!\n",
 				       dev_bytenr);
 		} else {
 			block->is_metadata = 0;
@@ -2040,7 +2012,7 @@ again:
 		if (!is_metadata) {
 			processed_len = state->datablock_size;
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO "Written block (%s/%llu/?) !found in hash table, D.\n",
+				pr_info("Written block (%s/%llu/?) !found in hash table, D.\n",
 				       dev_state->name, dev_bytenr);
 			if (!state->include_extent_data) {
 				/* ignore that written D block */
@@ -2058,8 +2030,7 @@ again:
 			btrfsic_cmp_log_and_dev_bytenr(state, bytenr, dev_state,
 						       dev_bytenr);
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO
-				       "Written block @%llu (%s/%llu/?) !found in hash table, M.\n",
+				pr_info("Written block @%llu (%s/%llu/?) !found in hash table, M.\n",
 				       bytenr, dev_state->name, dev_bytenr);
 		}
 
@@ -2073,7 +2044,7 @@ again:
 
 		block = btrfsic_block_alloc();
 		if (NULL == block) {
-			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			pr_info("btrfsic: error, kmalloc failed!\n");
 			btrfsic_release_block_ctx(&block_ctx);
 			goto continue_loop;
 		}
@@ -2123,8 +2094,7 @@ again:
 			block->next_in_same_bio = NULL;
 		}
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "New written %c-block @%llu (%s/%llu/%d)\n",
+			pr_info("New written %c-block @%llu (%s/%llu/%d)\n",
 			       is_metadata ? 'M' : 'D',
 			       block->logical_bytenr, block->dev_state->name,
 			       block->dev_bytenr, block->mirror_num);
@@ -2135,8 +2105,7 @@ again:
 			ret = btrfsic_process_metablock(state, block,
 							&block_ctx, 0, 0);
 			if (ret)
-				printk(KERN_INFO
-				       "btrfsic: process_metablock(root @%llu) failed!\n",
+				pr_info("btrfsic: process_metablock(root @%llu) failed!\n",
 				       dev_bytenr);
 		}
 		btrfsic_release_block_ctx(&block_ctx);
@@ -2171,8 +2140,7 @@ static void btrfsic_bio_end_io(struct bio *bp)
 
 		if ((dev_state->state->print_mask &
 		     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
-			printk(KERN_INFO
-			       "bio_end_io(err=%d) for %c @%llu (%s/%llu/%d)\n",
+			pr_info("bio_end_io(err=%d) for %c @%llu (%s/%llu/%d)\n",
 			       bp->bi_error,
 			       btrfsic_get_block_type(dev_state->state, block),
 			       block->logical_bytenr, dev_state->name,
@@ -2183,8 +2151,7 @@ static void btrfsic_bio_end_io(struct bio *bp)
 			dev_state->last_flush_gen++;
 			if ((dev_state->state->print_mask &
 			     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
-				printk(KERN_INFO
-				       "bio_end_io() new %s flush_gen=%llu\n",
+				pr_info("bio_end_io() new %s flush_gen=%llu\n",
 				       dev_state->name,
 				       dev_state->last_flush_gen);
 		}
@@ -2207,8 +2174,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
 	BUG_ON(NULL == block);
 	dev_state = block->dev_state;
 	if ((dev_state->state->print_mask & BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
-		printk(KERN_INFO
-		       "bh_end_io(error=%d) for %c @%llu (%s/%llu/%d)\n",
+		pr_info("bh_end_io(error=%d) for %c @%llu (%s/%llu/%d)\n",
 		       iodone_w_error,
 		       btrfsic_get_block_type(dev_state->state, block),
 		       block->logical_bytenr, block->dev_state->name,
@@ -2219,8 +2185,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
 		dev_state->last_flush_gen++;
 		if ((dev_state->state->print_mask &
 		     BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
-			printk(KERN_INFO
-			       "bh_end_io() new %s flush_gen=%llu\n",
+			pr_info("bh_end_io() new %s flush_gen=%llu\n",
 			       dev_state->name, dev_state->last_flush_gen);
 	}
 	if (block->submit_bio_bh_rw & REQ_FUA)
@@ -2243,8 +2208,7 @@ static int btrfsic_process_written_superblock(
 	if (!(superblock->generation > state->max_superblock_generation ||
 	      0 == state->max_superblock_generation)) {
 		if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
-			printk(KERN_INFO
-			       "btrfsic: superblock @%llu (%s/%llu/%d) with old gen %llu <= %llu\n",
+			pr_info("btrfsic: superblock @%llu (%s/%llu/%d) with old gen %llu <= %llu\n",
 			       superblock->logical_bytenr,
 			       superblock->dev_state->name,
 			       superblock->dev_bytenr, superblock->mirror_num,
@@ -2252,8 +2216,7 @@ static int btrfsic_process_written_superblock(
 			       state->max_superblock_generation);
 	} else {
 		if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
-			printk(KERN_INFO
-			       "btrfsic: got new superblock @%llu (%s/%llu/%d) with new gen %llu > %llu\n",
+			pr_info("btrfsic: got new superblock @%llu (%s/%llu/%d) with new gen %llu > %llu\n",
 			       superblock->logical_bytenr,
 			       superblock->dev_state->name,
 			       superblock->dev_bytenr, superblock->mirror_num,
@@ -2288,7 +2251,7 @@ static int btrfsic_process_written_superblock(
 			next_bytenr = btrfs_super_root(super_hdr);
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "root@%llu\n", next_bytenr);
+				pr_info("root@%llu\n", next_bytenr);
 			break;
 		case 1:
 			btrfs_set_disk_key_objectid(&tmp_disk_key,
@@ -2297,7 +2260,7 @@ static int btrfsic_process_written_superblock(
 			next_bytenr = btrfs_super_chunk_root(super_hdr);
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "chunk@%llu\n", next_bytenr);
+				pr_info("chunk@%llu\n", next_bytenr);
 			break;
 		case 2:
 			btrfs_set_disk_key_objectid(&tmp_disk_key,
@@ -2308,7 +2271,7 @@ static int btrfsic_process_written_superblock(
 				continue;
 			if (state->print_mask &
 			    BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
-				printk(KERN_INFO "log@%llu\n", next_bytenr);
+				pr_info("log@%llu\n", next_bytenr);
 			break;
 		}
 
@@ -2316,21 +2279,19 @@ static int btrfsic_process_written_superblock(
 		    btrfs_num_copies(state->root->fs_info,
 				     next_bytenr, BTRFS_SUPER_INFO_SIZE);
 		if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
-			printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
+			pr_info("num_copies(log_bytenr=%llu) = %d\n",
 			       next_bytenr, num_copies);
 		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
 			int was_created;
 
 			if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-				printk(KERN_INFO
-				       "btrfsic_process_written_superblock(mirror_num=%d)\n", mirror_num);
+				pr_info("btrfsic_process_written_superblock(mirror_num=%d)\n", mirror_num);
 			ret = btrfsic_map_block(state, next_bytenr,
 						BTRFS_SUPER_INFO_SIZE,
 						&tmp_next_block_ctx,
 						mirror_num);
 			if (ret) {
-				printk(KERN_INFO
-				       "btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
+				pr_info("btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
 				       next_bytenr, mirror_num);
 				return -1;
 			}
@@ -2343,8 +2304,7 @@ static int btrfsic_process_written_superblock(
 					mirror_num,
 					&was_created);
 			if (NULL == next_block) {
-				printk(KERN_INFO
-				       "btrfsic: error, kmalloc failed!\n");
+				pr_info("btrfsic: error, kmalloc failed!\n");
 				btrfsic_release_block_ctx(&tmp_next_block_ctx);
 				return -1;
 			}
@@ -2393,8 +2353,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 		 * by the most recent super block.
 		 */
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "btrfsic: abort cyclic linkage (case 1).\n");
+			pr_info("btrfsic: abort cyclic linkage (case 1).\n");
 
 		return ret;
 	}
@@ -2405,8 +2364,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 	 */
 	list_for_each_entry(l, &block->ref_to_list, node_ref_to) {
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "rl=%d, %c @%llu (%s/%llu/%d) %u* refers to %c @%llu (%s/%llu/%d)\n",
+			pr_info("rl=%d, %c @%llu (%s/%llu/%d) %u* refers to %c @%llu (%s/%llu/%d)\n",
 			       recursion_level,
 			       btrfsic_get_block_type(state, block),
 			       block->logical_bytenr, block->dev_state->name,
@@ -2418,7 +2376,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 			       l->block_ref_to->dev_bytenr,
 			       l->block_ref_to->mirror_num);
 		if (l->block_ref_to->never_written) {
-			printk(KERN_INFO "btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is never written!\n",
+			pr_info("btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is never written!\n",
 			       btrfsic_get_block_type(state, l->block_ref_to),
 			       l->block_ref_to->logical_bytenr,
 			       l->block_ref_to->dev_state->name,
@@ -2426,7 +2384,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 			       l->block_ref_to->mirror_num);
 			ret = -1;
 		} else if (!l->block_ref_to->is_iodone) {
-			printk(KERN_INFO "btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is not yet iodone!\n",
+			pr_info("btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is not yet iodone!\n",
 			       btrfsic_get_block_type(state, l->block_ref_to),
 			       l->block_ref_to->logical_bytenr,
 			       l->block_ref_to->dev_state->name,
@@ -2434,7 +2392,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 			       l->block_ref_to->mirror_num);
 			ret = -1;
 		} else if (l->block_ref_to->iodone_w_error) {
-			printk(KERN_INFO "btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which has write error!\n",
+			pr_info("btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which has write error!\n",
 			       btrfsic_get_block_type(state, l->block_ref_to),
 			       l->block_ref_to->logical_bytenr,
 			       l->block_ref_to->dev_state->name,
@@ -2447,7 +2405,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 			   l->parent_generation &&
 			   BTRFSIC_GENERATION_UNKNOWN !=
 			   l->block_ref_to->generation) {
-			printk(KERN_INFO "btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) with generation %llu != parent generation %llu!\n",
+			pr_info("btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) with generation %llu != parent generation %llu!\n",
 			       btrfsic_get_block_type(state, l->block_ref_to),
 			       l->block_ref_to->logical_bytenr,
 			       l->block_ref_to->dev_state->name,
@@ -2458,7 +2416,7 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
 			ret = -1;
 		} else if (l->block_ref_to->flush_gen >
 			   l->block_ref_to->dev_state->last_flush_gen) {
-			printk(KERN_INFO "btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is not flushed out of disk's write cache (block flush_gen=%llu, dev->flush_gen=%llu)!\n",
+			pr_info("btrfs: attempt to write superblock which references block %c @%llu (%s/%llu/%d) which is not flushed out of disk's write cache (block flush_gen=%llu, dev->flush_gen=%llu)!\n",
 			       btrfsic_get_block_type(state, l->block_ref_to),
 			       l->block_ref_to->logical_bytenr,
 			       l->block_ref_to->dev_state->name,
@@ -2487,8 +2445,7 @@ static int btrfsic_is_block_ref_by_superblock(
 	if (recursion_level >= 3 + BTRFS_MAX_LEVEL) {
 		/* refer to comment at "abort cyclic linkage (case 1)" */
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "btrfsic: abort cyclic linkage (case 2).\n");
+			pr_info("btrfsic: abort cyclic linkage (case 2).\n");
 
 		return 0;
 	}
@@ -2499,8 +2456,7 @@ static int btrfsic_is_block_ref_by_superblock(
 	 */
 	list_for_each_entry(l, &block->ref_from_list, node_ref_from) {
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "rl=%d, %c @%llu (%s/%llu/%d) is ref %u* from %c @%llu (%s/%llu/%d)\n",
+			pr_info("rl=%d, %c @%llu (%s/%llu/%d) is ref %u* from %c @%llu (%s/%llu/%d)\n",
 			       recursion_level,
 			       btrfsic_get_block_type(state, block),
 			       block->logical_bytenr, block->dev_state->name,
@@ -2530,8 +2486,7 @@ static int btrfsic_is_block_ref_by_superblock(
 static void btrfsic_print_add_link(const struct btrfsic_state *state,
 				   const struct btrfsic_block_link *l)
 {
-	printk(KERN_INFO
-	       "Add %u* link from %c @%llu (%s/%llu/%d) to %c @%llu (%s/%llu/%d).\n",
+	pr_info("Add %u* link from %c @%llu (%s/%llu/%d) to %c @%llu (%s/%llu/%d).\n",
 	       l->ref_cnt,
 	       btrfsic_get_block_type(state, l->block_ref_from),
 	       l->block_ref_from->logical_bytenr,
@@ -2546,8 +2501,7 @@ static void btrfsic_print_add_link(const struct btrfsic_state *state,
 static void btrfsic_print_rem_link(const struct btrfsic_state *state,
 				   const struct btrfsic_block_link *l)
 {
-	printk(KERN_INFO
-	       "Rem %u* link from %c @%llu (%s/%llu/%d) to %c @%llu (%s/%llu/%d).\n",
+	pr_info("Rem %u* link from %c @%llu (%s/%llu/%d) to %c @%llu (%s/%llu/%d).\n",
 	       l->ref_cnt,
 	       btrfsic_get_block_type(state, l->block_ref_from),
 	       l->block_ref_from->logical_bytenr,
@@ -2659,8 +2613,7 @@ static struct btrfsic_block_link *btrfsic_block_link_lookup_or_add(
 	if (NULL == l) {
 		l = btrfsic_block_link_alloc();
 		if (NULL == l) {
-			printk(KERN_INFO
-			       "btrfsic: error, kmalloc failed!\n");
+			pr_info("btrfsic: error, kmalloc failed!\n");
 			return NULL;
 		}
 
@@ -2707,13 +2660,12 @@ static struct btrfsic_block *btrfsic_block_lookup_or_add(
 
 		block = btrfsic_block_alloc();
 		if (NULL == block) {
-			printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
+			pr_info("btrfsic: error, kmalloc failed!\n");
 			return NULL;
 		}
 		dev_state = btrfsic_dev_state_lookup(block_ctx->dev->bdev);
 		if (NULL == dev_state) {
-			printk(KERN_INFO
-			       "btrfsic: error, lookup dev_state failed!\n");
+			pr_info("btrfsic: error, lookup dev_state failed!\n");
 			btrfsic_block_free(block);
 			return NULL;
 		}
@@ -2725,8 +2677,7 @@ static struct btrfsic_block *btrfsic_block_lookup_or_add(
 		block->never_written = never_written;
 		block->mirror_num = mirror_num;
 		if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
-			printk(KERN_INFO
-			       "New %s%c-block @%llu (%s/%llu/%d)\n",
+			pr_info("New %s%c-block @%llu (%s/%llu/%d)\n",
 			       additional_string,
 			       btrfsic_get_block_type(state, block),
 			       block->logical_bytenr, dev_state->name,
@@ -2761,7 +2712,7 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
 		ret = btrfsic_map_block(state, bytenr, state->metablock_size,
 					&block_ctx, mirror_num);
 		if (ret) {
-			printk(KERN_INFO "btrfsic: btrfsic_map_block(logical @%llu, mirror %d) failed!\n",
+			pr_info("btrfsic: btrfsic_map_block(logical @%llu, mirror %d) failed!\n",
 			       bytenr, mirror_num);
 			continue;
 		}
@@ -2776,7 +2727,7 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
 	}
 
 	if (WARN_ON(!match)) {
-		printk(KERN_INFO "btrfs: attempt to write M-block which contains logical bytenr that doesn't map to dev+physical bytenr of submit_bio, buffer->log_bytenr=%llu, submit_bio(bdev=%s, phys_bytenr=%llu)!\n",
+		pr_info("btrfs: attempt to write M-block which contains logical bytenr that doesn't map to dev+physical bytenr of submit_bio, buffer->log_bytenr=%llu, submit_bio(bdev=%s, phys_bytenr=%llu)!\n",
 		       bytenr, dev_state->name, dev_bytenr);
 		for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
 			ret = btrfsic_map_block(state, bytenr,
@@ -2785,7 +2736,7 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
 			if (ret)
 				continue;
 
-			printk(KERN_INFO "Read logical bytenr @%llu maps to (%s/%llu/%d)\n",
+			pr_info("Read logical bytenr @%llu maps to (%s/%llu/%d)\n",
 			       bytenr, block_ctx.dev->name,
 			       block_ctx.dev_bytenr, mirror_num);
 		}
@@ -2819,8 +2770,7 @@ int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh)
 		dev_bytenr = 4096 * bh->b_blocknr;
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
-			printk(KERN_INFO
-			       "submit_bh(op=0x%x,0x%x, blocknr=%llu (bytenr %llu), size=%zu, data=%p, bdev=%p)\n",
+			pr_info("submit_bh(op=0x%x,0x%x, blocknr=%llu (bytenr %llu), size=%zu, data=%p, bdev=%p)\n",
 			       op, op_flags, (unsigned long long)bh->b_blocknr,
 			       dev_bytenr, bh->b_size, bh->b_data, bh->b_bdev);
 		btrfsic_process_written_block(dev_state, dev_bytenr,
@@ -2829,15 +2779,13 @@ int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh)
 	} else if (NULL != dev_state && (op_flags & REQ_PREFLUSH)) {
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
-			printk(KERN_INFO
-			       "submit_bh(op=0x%x,0x%x FLUSH, bdev=%p)\n",
+			pr_info("submit_bh(op=0x%x,0x%x FLUSH, bdev=%p)\n",
 			       op, op_flags, bh->b_bdev);
 		if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
 			if ((dev_state->state->print_mask &
 			     (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
 			      BTRFSIC_PRINT_MASK_VERBOSE)))
-				printk(KERN_INFO
-				       "btrfsic_submit_bh(%s) with FLUSH but dummy block already in use (ignored)!\n",
+				pr_info("btrfsic_submit_bh(%s) with FLUSH but dummy block already in use (ignored)!\n",
 				       dev_state->name);
 		} else {
 			struct btrfsic_block *const block =
@@ -2882,8 +2830,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
 		bio_is_patched = 0;
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
-			printk(KERN_INFO
-			       "submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
+			pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
 			       bio_op(bio), bio->bi_opf, bio->bi_vcnt,
 			       (unsigned long long)bio->bi_iter.bi_sector,
 			       dev_bytenr, bio->bi_bdev);
@@ -2906,8 +2853,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
 			}
 			if (dev_state->state->print_mask &
 			    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE)
-				printk(KERN_INFO
-				       "#%u: bytenr=%llu, len=%u, offset=%u\n",
+				pr_info("#%u: bytenr=%llu, len=%u, offset=%u\n",
 				       i, cur_bytenr, bio->bi_io_vec[i].bv_len,
 				       bio->bi_io_vec[i].bv_offset);
 			cur_bytenr += bio->bi_io_vec[i].bv_len;
@@ -2924,15 +2870,13 @@ static void __btrfsic_submit_bio(struct bio *bio)
 	} else if (NULL != dev_state && (bio->bi_opf & REQ_PREFLUSH)) {
 		if (dev_state->state->print_mask &
 		    BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
-			printk(KERN_INFO
-			       "submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n",
+			pr_info("submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n",
 			       bio_op(bio), bio->bi_opf, bio->bi_bdev);
 		if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
 			if ((dev_state->state->print_mask &
 			     (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
 			      BTRFSIC_PRINT_MASK_VERBOSE)))
-				printk(KERN_INFO
-				       "btrfsic_submit_bio(%s) with FLUSH but dummy block already in use (ignored)!\n",
+				pr_info("btrfsic_submit_bio(%s) with FLUSH but dummy block already in use (ignored)!\n",
 				       dev_state->name);
 		} else {
 			struct btrfsic_block *const block =
@@ -2976,14 +2920,12 @@ int btrfsic_mount(struct btrfs_root *root,
 	struct btrfs_device *device;
 
 	if (root->nodesize & ((u64)PAGE_SIZE - 1)) {
-		printk(KERN_INFO
-		       "btrfsic: cannot handle nodesize %d not being a multiple of PAGE_SIZE %ld!\n",
+		pr_info("btrfsic: cannot handle nodesize %d not being a multiple of PAGE_SIZE %ld!\n",
 		       root->nodesize, PAGE_SIZE);
 		return -1;
 	}
 	if (root->sectorsize & ((u64)PAGE_SIZE - 1)) {
-		printk(KERN_INFO
-		       "btrfsic: cannot handle sectorsize %d not being a multiple of PAGE_SIZE %ld!\n",
+		pr_info("btrfsic: cannot handle sectorsize %d not being a multiple of PAGE_SIZE %ld!\n",
 		       root->sectorsize, PAGE_SIZE);
 		return -1;
 	}
@@ -2991,7 +2933,7 @@ int btrfsic_mount(struct btrfs_root *root,
 	if (!state) {
 		state = vzalloc(sizeof(*state));
 		if (!state) {
-			printk(KERN_INFO "btrfs check-integrity: vzalloc() failed!\n");
+			pr_info("btrfs check-integrity: vzalloc() failed!\n");
 			return -1;
 		}
 	}
@@ -3023,8 +2965,7 @@ int btrfsic_mount(struct btrfs_root *root,
 
 		ds = btrfsic_dev_state_alloc();
 		if (NULL == ds) {
-			printk(KERN_INFO
-			       "btrfs check-integrity: kmalloc() failed!\n");
+			pr_info("btrfs check-integrity: kmalloc() failed!\n");
 			mutex_unlock(&btrfsic_mutex);
 			return -1;
 		}
@@ -3085,8 +3026,7 @@ void btrfsic_unmount(struct btrfs_root *root,
 	}
 
 	if (NULL == state) {
-		printk(KERN_INFO
-		       "btrfsic: error, cannot find state information on umount!\n");
+		pr_info("btrfsic: error, cannot find state information on umount!\n");
 		mutex_unlock(&btrfsic_mutex);
 		return;
 	}
@@ -3113,7 +3053,7 @@ void btrfsic_unmount(struct btrfs_root *root,
 		if (b_all->is_iodone || b_all->never_written)
 			btrfsic_block_free(b_all);
 		else
-			printk(KERN_INFO "btrfs: attempt to free %c-block @%llu (%s/%llu/%d) on umount which is not yet iodone!\n",
+			pr_info("btrfs: attempt to free %c-block @%llu (%s/%llu/%d) on umount which is not yet iodone!\n",
 			       btrfsic_get_block_type(state, b_all),
 			       b_all->logical_bytenr, b_all->dev_state->name,
 			       b_all->dev_bytenr, b_all->mirror_num);