From: Jeff Mahoney <je...@suse.com>

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 <je...@suse.com>

diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 8d87056..dc9c93e 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);
                }
@@ -2822,8 +2773,7 @@ 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,
@@ -2832,15 +2782,13 @@ 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 =
@@ -2885,8 +2833,7 @@ 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);
@@ -2909,8 +2856,7 @@ 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;
@@ -2927,15 +2873,13 @@ 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 =
@@ -2979,14 +2923,12 @@ 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;
        }
@@ -2994,7 +2936,7 @@ 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;
                }
        }
@@ -3026,8 +2968,7 @@ 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;
                }
@@ -3088,8 +3029,7 @@ 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;
        }
@@ -3116,7 +3056,7 @@ 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);
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 029db6e..d635d0f 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -783,8 +783,7 @@ void __init btrfs_init_compress(void)
                 */
                workspace = btrfs_compress_op[i]->alloc_workspace();
                if (IS_ERR(workspace)) {
-                       printk(KERN_WARNING
-       "BTRFS: cannot preallocate compression workspace, will try later");
+                       pr_warn("BTRFS: cannot preallocate compression 
workspace, will try later\n");
                } else {
                        atomic_set(&btrfs_comp_ws[i].total_ws, 1);
                        btrfs_comp_ws[i].free_ws = 1;
@@ -854,8 +853,7 @@ again:
                                        /* no burst */ 1);
 
                        if (__ratelimit(&_rs)) {
-                               printk(KERN_WARNING
-                           "no compression workspaces, low memory, retrying");
+                               pr_warn("no compression workspaces, low memory, 
retrying\n");
                        }
                }
                goto again;
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index aace5e1..86d08c2 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -4795,7 +4795,7 @@ void setup_items_for_insert(struct btrfs_root *root, 
struct btrfs_path *path,
                for (i = slot; i < nritems; i++) {
                        u32 ioff;
 
-                       item = btrfs_item_nr( i);
+                       item = btrfs_item_nr(i);
                        ioff = btrfs_token_item_offset(leaf, item, &token);
                        btrfs_set_token_item_offset(leaf, item,
                                                    ioff - total_data, &token);
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9267436..6683326 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1436,13 +1436,13 @@ static inline void btrfs_init_map_token (struct 
btrfs_map_token *token)
 #define cpu_to_le8(v) (v)
 #define __le8 u8
 
-#define read_eb_member(eb, ptr, type, member, result) (                        
\
+#define read_eb_member(eb, ptr, type, member, result) (\
        read_extent_buffer(eb, (char *)(result),                        \
                           ((unsigned long)(ptr)) +                     \
                            offsetof(type, member),                     \
                           sizeof(((type *)0)->member)))
 
-#define write_eb_member(eb, ptr, type, member, result) (               \
+#define write_eb_member(eb, ptr, type, member, result) (\
        write_extent_buffer(eb, (char *)(result),                       \
                           ((unsigned long)(ptr)) +                     \
                            offsetof(type, member),                     \
@@ -3355,7 +3355,7 @@ do {                                                      
                \
        btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
 #else
 #define btrfs_debug(fs_info, fmt, args...) \
-    no_printk(KERN_DEBUG fmt, ##args)
+       no_printk(KERN_DEBUG fmt, ##args)
 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \
        no_printk(KERN_DEBUG fmt, ##args)
 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 33d46ff..c7f2cc8 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -427,7 +427,7 @@ static int btrfs_check_super_csum(char *raw_disk_sb)
        }
 
        if (csum_type >= ARRAY_SIZE(btrfs_csum_sizes)) {
-               printk(KERN_ERR "BTRFS: unsupported checksum algorithm %u\n",
+               pr_err("BTRFS: unsupported checksum algorithm %u\n",
                                csum_type);
                ret = 1;
        }
@@ -4098,24 +4098,24 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
        int ret = 0;
 
        if (btrfs_super_magic(sb) != BTRFS_MAGIC) {
-               printk(KERN_ERR "BTRFS: no valid FS found\n");
+               pr_err("BTRFS: no valid FS found\n");
                ret = -EINVAL;
        }
        if (btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP)
-               printk(KERN_WARNING "BTRFS: unrecognized super flag: %llu\n",
+               pr_warn("BTRFS: unrecognized super flag: %llu\n",
                                btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP);
        if (btrfs_super_root_level(sb) >= BTRFS_MAX_LEVEL) {
-               printk(KERN_ERR "BTRFS: tree_root level too big: %d >= %d\n",
+               pr_err("BTRFS: tree_root level too big: %d >= %d\n",
                                btrfs_super_root_level(sb), BTRFS_MAX_LEVEL);
                ret = -EINVAL;
        }
        if (btrfs_super_chunk_root_level(sb) >= BTRFS_MAX_LEVEL) {
-               printk(KERN_ERR "BTRFS: chunk_root level too big: %d >= %d\n",
+               pr_err("BTRFS: chunk_root level too big: %d >= %d\n",
                                btrfs_super_chunk_root_level(sb), 
BTRFS_MAX_LEVEL);
                ret = -EINVAL;
        }
        if (btrfs_super_log_root_level(sb) >= BTRFS_MAX_LEVEL) {
-               printk(KERN_ERR "BTRFS: log_root level too big: %d >= %d\n",
+               pr_err("BTRFS: log_root level too big: %d >= %d\n",
                                btrfs_super_log_root_level(sb), 
BTRFS_MAX_LEVEL);
                ret = -EINVAL;
        }
@@ -4126,22 +4126,22 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
         */
        if (!is_power_of_2(sectorsize) || sectorsize < 4096 ||
            sectorsize > BTRFS_MAX_METADATA_BLOCKSIZE) {
-               printk(KERN_ERR "BTRFS: invalid sectorsize %llu\n", sectorsize);
+               pr_err("BTRFS: invalid sectorsize %llu\n", sectorsize);
                ret = -EINVAL;
        }
        /* Only PAGE SIZE is supported yet */
        if (sectorsize != PAGE_SIZE) {
-               printk(KERN_ERR "BTRFS: sectorsize %llu not supported yet, only 
support %lu\n",
+               pr_err("BTRFS: sectorsize %llu not supported yet, only support 
%lu\n",
                                sectorsize, PAGE_SIZE);
                ret = -EINVAL;
        }
        if (!is_power_of_2(nodesize) || nodesize < sectorsize ||
            nodesize > BTRFS_MAX_METADATA_BLOCKSIZE) {
-               printk(KERN_ERR "BTRFS: invalid nodesize %llu\n", nodesize);
+               pr_err("BTRFS: invalid nodesize %llu\n", nodesize);
                ret = -EINVAL;
        }
        if (nodesize != le32_to_cpu(sb->__unused_leafsize)) {
-               printk(KERN_ERR "BTRFS: invalid leafsize %u, should be %llu\n",
+               pr_err("BTRFS: invalid leafsize %u, should be %llu\n",
                                le32_to_cpu(sb->__unused_leafsize),
                                nodesize);
                ret = -EINVAL;
@@ -4149,23 +4149,23 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
 
        /* Root alignment check */
        if (!IS_ALIGNED(btrfs_super_root(sb), sectorsize)) {
-               printk(KERN_WARNING "BTRFS: tree_root block unaligned: %llu\n",
+               pr_warn("BTRFS: tree_root block unaligned: %llu\n",
                                btrfs_super_root(sb));
                ret = -EINVAL;
        }
        if (!IS_ALIGNED(btrfs_super_chunk_root(sb), sectorsize)) {
-               printk(KERN_WARNING "BTRFS: chunk_root block unaligned: %llu\n",
+               pr_warn("BTRFS: chunk_root block unaligned: %llu\n",
                                btrfs_super_chunk_root(sb));
                ret = -EINVAL;
        }
        if (!IS_ALIGNED(btrfs_super_log_root(sb), sectorsize)) {
-               printk(KERN_WARNING "BTRFS: log_root block unaligned: %llu\n",
+               pr_warn("BTRFS: log_root block unaligned: %llu\n",
                                btrfs_super_log_root(sb));
                ret = -EINVAL;
        }
 
        if (memcmp(fs_info->fsid, sb->dev_item.fsid, BTRFS_UUID_SIZE) != 0) {
-               printk(KERN_ERR "BTRFS: dev_item UUID does not match fsid: %pU 
!= %pU\n",
+               pr_err("BTRFS: dev_item UUID does not match fsid: %pU != %pU\n",
                                fs_info->fsid, sb->dev_item.fsid);
                ret = -EINVAL;
        }
@@ -4185,15 +4185,15 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
                ret = -EINVAL;
        }
        if (btrfs_super_num_devices(sb) > (1UL << 31))
-               printk(KERN_WARNING "BTRFS: suspicious number of devices: 
%llu\n",
+               pr_warn("BTRFS: suspicious number of devices: %llu\n",
                                btrfs_super_num_devices(sb));
        if (btrfs_super_num_devices(sb) == 0) {
-               printk(KERN_ERR "BTRFS: number of devices is 0\n");
+               pr_err("BTRFS: number of devices is 0\n");
                ret = -EINVAL;
        }
 
        if (btrfs_super_bytenr(sb) != BTRFS_SUPER_INFO_OFFSET) {
-               printk(KERN_ERR "BTRFS: super offset mismatch %llu != %u\n",
+               pr_err("BTRFS: super offset mismatch %llu != %u\n",
                                btrfs_super_bytenr(sb), 
BTRFS_SUPER_INFO_OFFSET);
                ret = -EINVAL;
        }
@@ -4203,14 +4203,14 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
         * and one chunk
         */
        if (btrfs_super_sys_array_size(sb) > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) {
-               printk(KERN_ERR "BTRFS: system chunk array too big %u > %u\n",
+               pr_err("BTRFS: system chunk array too big %u > %u\n",
                                btrfs_super_sys_array_size(sb),
                                BTRFS_SYSTEM_CHUNK_ARRAY_SIZE);
                ret = -EINVAL;
        }
        if (btrfs_super_sys_array_size(sb) < sizeof(struct btrfs_disk_key)
                        + sizeof(struct btrfs_chunk)) {
-               printk(KERN_ERR "BTRFS: system chunk array too small %u < 
%zu\n",
+               pr_err("BTRFS: system chunk array too small %u < %zu\n",
                                btrfs_super_sys_array_size(sb),
                                sizeof(struct btrfs_disk_key)
                                + sizeof(struct btrfs_chunk));
@@ -4222,13 +4222,11 @@ static int btrfs_check_super_valid(struct btrfs_fs_info 
*fs_info,
         * but it's still possible that it's the one that's wrong.
         */
        if (btrfs_super_generation(sb) < btrfs_super_chunk_root_generation(sb))
-               printk(KERN_WARNING
-                       "BTRFS: suspicious: generation < chunk_root_generation: 
%llu < %llu\n",
+               pr_warn("BTRFS: suspicious: generation < chunk_root_generation: 
%llu < %llu\n",
                        btrfs_super_generation(sb), 
btrfs_super_chunk_root_generation(sb));
        if (btrfs_super_generation(sb) < btrfs_super_cache_generation(sb)
            && btrfs_super_cache_generation(sb) != (u64)-1)
-               printk(KERN_WARNING
-                       "BTRFS: suspicious: generation < cache_generation: %llu 
< %llu\n",
+               pr_warn("BTRFS: suspicious: generation < cache_generation: %llu 
< %llu\n",
                        btrfs_super_generation(sb), 
btrfs_super_cache_generation(sb));
 
        return ret;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index d8bed44..07f0e91 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7914,12 +7914,12 @@ static void dump_space_info(struct btrfs_space_info 
*info, u64 bytes,
        int index = 0;
 
        spin_lock(&info->lock);
-       printk(KERN_INFO "BTRFS: space_info %llu has %llu free, is %sfull\n",
+       pr_info("BTRFS: space_info %llu has %llu free, is %sfull\n",
               info->flags,
               info->total_bytes - info->bytes_used - info->bytes_pinned -
               info->bytes_reserved - info->bytes_readonly -
               info->bytes_may_use, (info->full) ? "" : "not ");
-       printk(KERN_INFO "BTRFS: space_info total=%llu, used=%llu, pinned=%llu, 
reserved=%llu, may_use=%llu, readonly=%llu\n",
+       pr_info("BTRFS: space_info total=%llu, used=%llu, pinned=%llu, 
reserved=%llu, may_use=%llu, readonly=%llu\n",
               info->total_bytes, info->bytes_used, info->bytes_pinned,
               info->bytes_reserved, info->bytes_may_use,
               info->bytes_readonly);
@@ -7932,7 +7932,7 @@ static void dump_space_info(struct btrfs_space_info 
*info, u64 bytes,
 again:
        list_for_each_entry(cache, &info->block_groups[index], list) {
                spin_lock(&cache->lock);
-               printk(KERN_INFO "BTRFS: block group %llu has %llu bytes, %llu 
used %llu pinned %llu reserved %s\n",
+               pr_info("BTRFS: block group %llu has %llu bytes, %llu used %llu 
pinned %llu reserved %s\n",
                       cache->key.objectid, cache->key.offset,
                       btrfs_block_group_used(&cache->item), cache->pinned,
                       cache->reserved, cache->ro ? "[readonly]" : "");
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0fede81..6fdc701 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -74,7 +74,7 @@ void btrfs_leak_debug_check(void)
 
        while (!list_empty(&buffers)) {
                eb = list_entry(buffers.next, struct extent_buffer, leak_list);
-               printk(KERN_ERR "BTRFS: buffer leak start %llu len %lu refs 
%d\n",
+               pr_err("BTRFS: buffer leak start %llu len %lu refs %d\n",
                       eb->start, eb->len, atomic_read(&eb->refs));
                list_del(&eb->leak_list);
                kmem_cache_free(extent_buffer_cache, eb);
@@ -459,7 +459,7 @@ static int insert_state(struct extent_io_tree *tree,
        if (node) {
                struct extent_state *found;
                found = rb_entry(node, struct extent_state, rb_node);
-               printk(KERN_ERR "BTRFS: found node %llu %llu on insert of %llu 
%llu\n",
+               pr_err("BTRFS: found node %llu %llu on insert of %llu %llu\n",
                       found->start, found->end, start, end);
                return -EEXIST;
        }
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index ea09fab..60dedf4 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2346,7 +2346,7 @@ out:
        spin_unlock(&ctl->tree_lock);
 
        if (ret) {
-               printk(KERN_CRIT "BTRFS: unable to add free space :%d\n", ret);
+               pr_crit("BTRFS: unable to add free space :%d\n", ret);
                ASSERT(ret != -EEXIST);
        }
 
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index 1adfbe7..48655da 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -141,7 +141,7 @@ static int lzo_compress_pages(struct list_head *ws,
                ret = lzo1x_1_compress(data_in, in_len, workspace->cbuf,
                                       &out_len, workspace->mem);
                if (ret != LZO_E_OK) {
-                       printk(KERN_DEBUG "BTRFS: deflate in loop returned 
%d\n",
+                       pr_debug("BTRFS: deflate in loop returned %d\n",
                               ret);
                        ret = -EIO;
                        goto out;
@@ -356,7 +356,7 @@ cont:
                if (need_unmap)
                        kunmap(pages_in[page_in_index - 1]);
                if (ret != LZO_E_OK) {
-                       printk(KERN_WARNING "BTRFS: decompress failed\n");
+                       pr_warn("BTRFS: decompress failed\n");
                        ret = -EIO;
                        break;
                }
@@ -402,7 +402,7 @@ static int lzo_decompress(struct list_head *ws, unsigned 
char *data_in,
        out_len = PAGE_SIZE;
        ret = lzo1x_decompress_safe(data_in, in_len, workspace->buf, &out_len);
        if (ret != LZO_E_OK) {
-               printk(KERN_WARNING "BTRFS: decompress failed!\n");
+               pr_warn("BTRFS: decompress failed!\n");
                ret = -EIO;
                goto out;
        }
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 2e317da6c..12017f4 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -24,11 +24,11 @@ static void print_chunk(struct extent_buffer *eb, struct 
btrfs_chunk *chunk)
 {
        int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
        int i;
-       printk(KERN_INFO "\t\tchunk length %llu owner %llu type %llu 
num_stripes %d\n",
+       pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
               btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
               btrfs_chunk_type(eb, chunk), num_stripes);
        for (i = 0 ; i < num_stripes ; i++) {
-               printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i,
+               pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
                      btrfs_stripe_devid_nr(eb, chunk, i),
                      btrfs_stripe_offset_nr(eb, chunk, i));
        }
@@ -36,7 +36,7 @@ static void print_chunk(struct extent_buffer *eb, struct 
btrfs_chunk *chunk)
 static void print_dev_item(struct extent_buffer *eb,
                           struct btrfs_dev_item *dev_item)
 {
-       printk(KERN_INFO "\t\tdev item devid %llu total_bytes %llu bytes used 
%llu\n",
+       pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
               btrfs_device_id(eb, dev_item),
               btrfs_device_total_bytes(eb, dev_item),
               btrfs_device_bytes_used(eb, dev_item));
@@ -44,7 +44,7 @@ static void print_dev_item(struct extent_buffer *eb,
 static void print_extent_data_ref(struct extent_buffer *eb,
                                  struct btrfs_extent_data_ref *ref)
 {
-       printk(KERN_INFO "\t\textent data backref root %llu objectid %llu 
offset %llu count %u\n",
+       pr_info("\t\textent data backref root %llu objectid %llu offset %llu 
count %u\n",
               btrfs_extent_data_ref_root(eb, ref),
               btrfs_extent_data_ref_objectid(eb, ref),
               btrfs_extent_data_ref_offset(eb, ref),
@@ -69,7 +69,7 @@ static void print_extent_item(struct extent_buffer *eb, int 
slot, int type)
                struct btrfs_extent_item_v0 *ei0;
                BUG_ON(item_size != sizeof(*ei0));
                ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
-               printk(KERN_INFO "\t\textent refs %u\n",
+               pr_info("\t\textent refs %u\n",
                       btrfs_extent_refs_v0(eb, ei0));
                return;
 #else
@@ -80,7 +80,7 @@ static void print_extent_item(struct extent_buffer *eb, int 
slot, int type)
        ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
        flags = btrfs_extent_flags(eb, ei);
 
-       printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n",
+       pr_info("\t\textent refs %llu gen %llu flags %llu\n",
               btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
               flags);
 
@@ -89,7 +89,7 @@ static void print_extent_item(struct extent_buffer *eb, int 
slot, int type)
                struct btrfs_tree_block_info *info;
                info = (struct btrfs_tree_block_info *)(ei + 1);
                btrfs_tree_block_key(eb, info, &key);
-               printk(KERN_INFO "\t\ttree block key (%llu %u %llu) level %d\n",
+               pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
                       btrfs_disk_key_objectid(&key), key.type,
                       btrfs_disk_key_offset(&key),
                       btrfs_tree_block_level(eb, info));
@@ -106,10 +106,10 @@ static void print_extent_item(struct extent_buffer *eb, 
int slot, int type)
                offset = btrfs_extent_inline_ref_offset(eb, iref);
                switch (type) {
                case BTRFS_TREE_BLOCK_REF_KEY:
-                       printk(KERN_INFO "\t\ttree block backref root %llu\n", 
offset);
+                       pr_info("\t\ttree block backref root %llu\n", offset);
                        break;
                case BTRFS_SHARED_BLOCK_REF_KEY:
-                       printk(KERN_INFO "\t\tshared block backref parent 
%llu\n", offset);
+                       pr_info("\t\tshared block backref parent %llu\n", 
offset);
                        break;
                case BTRFS_EXTENT_DATA_REF_KEY:
                        dref = (struct btrfs_extent_data_ref *)(&iref->offset);
@@ -117,7 +117,7 @@ static void print_extent_item(struct extent_buffer *eb, int 
slot, int type)
                        break;
                case BTRFS_SHARED_DATA_REF_KEY:
                        sref = (struct btrfs_shared_data_ref *)(iref + 1);
-                       printk(KERN_INFO "\t\tshared data backref parent %llu 
count %u\n",
+                       pr_info("\t\tshared data backref parent %llu count 
%u\n",
                               offset, btrfs_shared_data_ref_count(eb, sref));
                        break;
                default:
@@ -154,7 +154,7 @@ static void print_uuid_item(struct extent_buffer *l, 
unsigned long offset,
                __le64 subvol_id;
 
                read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
-               printk(KERN_INFO "\t\tsubvol_id %llu\n",
+               pr_info("\t\tsubvol_id %llu\n",
                       (unsigned long long)le64_to_cpu(subvol_id));
                item_size -= sizeof(u64);
                offset += sizeof(u64);
@@ -188,13 +188,13 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                item = btrfs_item_nr(i);
                btrfs_item_key_to_cpu(l, &key, i);
                type = key.type;
-               printk(KERN_INFO "\titem %d key (%llu %u %llu) itemoff %d 
itemsize %d\n",
+               pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
                        i, key.objectid, type, key.offset,
                        btrfs_item_offset(l, item), btrfs_item_size(l, item));
                switch (type) {
                case BTRFS_INODE_ITEM_KEY:
                        ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
-                       printk(KERN_INFO "\t\tinode generation %llu size %llu 
mode %o\n",
+                       pr_info("\t\tinode generation %llu size %llu mode %o\n",
                               btrfs_inode_generation(l, ii),
                               btrfs_inode_size(l, ii),
                               btrfs_inode_mode(l, ii));
@@ -202,13 +202,13 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                case BTRFS_DIR_ITEM_KEY:
                        di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
                        btrfs_dir_item_key_to_cpu(l, di, &found_key);
-                       printk(KERN_INFO "\t\tdir oid %llu type %u\n",
+                       pr_info("\t\tdir oid %llu type %u\n",
                                found_key.objectid,
                                btrfs_dir_type(l, di));
                        break;
                case BTRFS_ROOT_ITEM_KEY:
                        ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
-                       printk(KERN_INFO "\t\troot data bytenr %llu refs %u\n",
+                       pr_info("\t\troot data bytenr %llu refs %u\n",
                                btrfs_disk_root_bytenr(l, ri),
                                btrfs_disk_root_refs(l, ri));
                        break;
@@ -217,10 +217,10 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                        print_extent_item(l, i, type);
                        break;
                case BTRFS_TREE_BLOCK_REF_KEY:
-                       printk(KERN_INFO "\t\ttree block backref\n");
+                       pr_info("\t\ttree block backref\n");
                        break;
                case BTRFS_SHARED_BLOCK_REF_KEY:
-                       printk(KERN_INFO "\t\tshared block backref\n");
+                       pr_info("\t\tshared block backref\n");
                        break;
                case BTRFS_EXTENT_DATA_REF_KEY:
                        dref = btrfs_item_ptr(l, i,
@@ -230,7 +230,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                case BTRFS_SHARED_DATA_REF_KEY:
                        sref = btrfs_item_ptr(l, i,
                                              struct btrfs_shared_data_ref);
-                       printk(KERN_INFO "\t\tshared data backref count %u\n",
+                       pr_info("\t\tshared data backref count %u\n",
                               btrfs_shared_data_ref_count(l, sref));
                        break;
                case BTRFS_EXTENT_DATA_KEY:
@@ -238,14 +238,14 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                                            struct btrfs_file_extent_item);
                        if (btrfs_file_extent_type(l, fi) ==
                            BTRFS_FILE_EXTENT_INLINE) {
-                               printk(KERN_INFO "\t\tinline extent data size 
%u\n",
+                               pr_info("\t\tinline extent data size %u\n",
                                       btrfs_file_extent_inline_len(l, i, fi));
                                break;
                        }
-                       printk(KERN_INFO "\t\textent data disk bytenr %llu nr 
%llu\n",
+                       pr_info("\t\textent data disk bytenr %llu nr %llu\n",
                               btrfs_file_extent_disk_bytenr(l, fi),
                               btrfs_file_extent_disk_num_bytes(l, fi));
-                       printk(KERN_INFO "\t\textent data offset %llu nr %llu 
ram %llu\n",
+                       pr_info("\t\textent data offset %llu nr %llu ram 
%llu\n",
                               btrfs_file_extent_offset(l, fi),
                               btrfs_file_extent_num_bytes(l, fi),
                               btrfs_file_extent_ram_bytes(l, fi));
@@ -260,7 +260,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                case BTRFS_BLOCK_GROUP_ITEM_KEY:
                        bi = btrfs_item_ptr(l, i,
                                            struct btrfs_block_group_item);
-                       printk(KERN_INFO "\t\tblock group used %llu\n",
+                       pr_info("\t\tblock group used %llu\n",
                               btrfs_disk_block_group_used(l, bi));
                        break;
                case BTRFS_CHUNK_ITEM_KEY:
@@ -274,36 +274,36 @@ void btrfs_print_leaf(struct btrfs_root *root, struct 
extent_buffer *l)
                case BTRFS_DEV_EXTENT_KEY:
                        dev_extent = btrfs_item_ptr(l, i,
                                                    struct btrfs_dev_extent);
-                       printk(KERN_INFO "\t\tdev extent chunk_tree 
%llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
+                       pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk 
objectid %llu chunk offset %llu length %llu\n",
                               btrfs_dev_extent_chunk_tree(l, dev_extent),
                               btrfs_dev_extent_chunk_objectid(l, dev_extent),
                               btrfs_dev_extent_chunk_offset(l, dev_extent),
                               btrfs_dev_extent_length(l, dev_extent));
                        break;
                case BTRFS_PERSISTENT_ITEM_KEY:
-                       printk(KERN_INFO "\t\tpersistent item objectid %llu 
offset %llu\n",
+                       pr_info("\t\tpersistent item objectid %llu offset 
%llu\n",
                                        key.objectid, key.offset);
                        switch (key.objectid) {
                        case BTRFS_DEV_STATS_OBJECTID:
-                               printk(KERN_INFO "\t\tdevice stats\n");
+                               pr_info("\t\tdevice stats\n");
                                break;
                        default:
-                               printk(KERN_INFO "\t\tunknown persistent 
item\n");
+                               pr_info("\t\tunknown persistent item\n");
                        }
                        break;
                case BTRFS_TEMPORARY_ITEM_KEY:
-                       printk(KERN_INFO "\t\ttemporary item objectid %llu 
offset %llu\n",
+                       pr_info("\t\ttemporary item objectid %llu offset 
%llu\n",
                                        key.objectid, key.offset);
                        switch (key.objectid) {
                        case BTRFS_BALANCE_OBJECTID:
-                               printk(KERN_INFO "\t\tbalance status\n");
+                               pr_info("\t\tbalance status\n");
                                break;
                        default:
-                               printk(KERN_INFO "\t\tunknown temporary 
item\n");
+                               pr_info("\t\tunknown temporary item\n");
                        }
                        break;
                case BTRFS_DEV_REPLACE_KEY:
-                       printk(KERN_INFO "\t\tdev replace\n");
+                       pr_info("\t\tdev replace\n");
                        break;
                case BTRFS_UUID_KEY_SUBVOL:
                case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
@@ -334,7 +334,7 @@ void btrfs_print_tree(struct btrfs_root *root, struct 
extent_buffer *c)
                   (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr);
        for (i = 0; i < nr; i++) {
                btrfs_node_key_to_cpu(c, &key, i);
-               printk(KERN_INFO "\tkey %d (%llu %u %llu) block %llu\n",
+               pr_info("\tkey %d (%llu %u %llu) block %llu\n",
                       i, key.objectid, key.type, key.offset,
                       btrfs_node_blockptr(c, i));
        }
diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index 9e1bdaf..9e85300 100644
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -820,7 +820,7 @@ static void dump_devs(struct btrfs_fs_info *fs_info, int 
all)
 
        spin_lock(&fs_info->reada_lock);
        list_for_each_entry(device, &fs_devices->devices, dev_list) {
-               printk(KERN_DEBUG "dev %lld has %d in flight\n", device->devid,
+               pr_debug("dev %lld has %d in flight\n", device->devid,
                        atomic_read(&device->reada_in_flight));
                index = 0;
                while (1) {
@@ -829,17 +829,17 @@ static void dump_devs(struct btrfs_fs_info *fs_info, int 
all)
                                                     (void **)&zone, index, 1);
                        if (ret == 0)
                                break;
-                       printk(KERN_DEBUG "  zone %llu-%llu elems %llu locked 
%d devs",
+                       pr_debug("  zone %llu-%llu elems %llu locked %d devs",
                               zone->start, zone->end, zone->elems,
                               zone->locked);
                        for (j = 0; j < zone->ndevs; ++j) {
-                               printk(KERN_CONT " %lld",
+                               pr_cont(" %lld",
                                        zone->devs[j]->devid);
                        }
                        if (device->reada_curr_zone == zone)
-                               printk(KERN_CONT " curr off %llu",
+                               pr_cont(" curr off %llu",
                                        device->reada_next - zone->start);
-                       printk(KERN_CONT "\n");
+                       pr_cont("\n");
                        index = (zone->end >> PAGE_SHIFT) + 1;
                }
                cnt = 0;
@@ -851,21 +851,20 @@ static void dump_devs(struct btrfs_fs_info *fs_info, int 
all)
                                                     (void **)&re, index, 1);
                        if (ret == 0)
                                break;
-                       printk(KERN_DEBUG
-                               "  re: logical %llu size %u empty %d scheduled 
%d",
+                       pr_debug("  re: logical %llu size %u empty %d scheduled 
%d",
                                re->logical, fs_info->tree_root->nodesize,
                                list_empty(&re->extctl), re->scheduled);
 
                        for (i = 0; i < re->nzones; ++i) {
-                               printk(KERN_CONT " zone %llu-%llu devs",
+                               pr_cont(" zone %llu-%llu devs",
                                        re->zones[i]->start,
                                        re->zones[i]->end);
                                for (j = 0; j < re->zones[i]->ndevs; ++j) {
-                                       printk(KERN_CONT " %lld",
+                                       pr_cont(" %lld",
                                                re->zones[i]->devs[j]->devid);
                                }
                        }
-                       printk(KERN_CONT "\n");
+                       pr_cont("\n");
                        index = (re->logical >> PAGE_SHIFT) + 1;
                        if (++cnt > 15)
                                break;
@@ -885,20 +884,19 @@ static void dump_devs(struct btrfs_fs_info *fs_info, int 
all)
                        index = (re->logical >> PAGE_SHIFT) + 1;
                        continue;
                }
-               printk(KERN_DEBUG
-                       "re: logical %llu size %u list empty %d scheduled %d",
+               pr_debug("re: logical %llu size %u list empty %d scheduled %d",
                        re->logical, fs_info->tree_root->nodesize,
                        list_empty(&re->extctl), re->scheduled);
                for (i = 0; i < re->nzones; ++i) {
-                       printk(KERN_CONT " zone %llu-%llu devs",
+                       pr_cont(" zone %llu-%llu devs",
                                re->zones[i]->start,
                                re->zones[i]->end);
                        for (j = 0; j < re->zones[i]->ndevs; ++j) {
-                               printk(KERN_CONT " %lld",
+                               pr_cont(" %lld",
                                       re->zones[i]->devs[j]->devid);
                        }
                }
-               printk(KERN_CONT "\n");
+               pr_cont("\n");
                index = (re->logical >> PAGE_SHIFT) + 1;
        }
        spin_unlock(&fs_info->reada_lock);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 9802d51..52f5835 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -151,12 +151,11 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info 
*fs_info, const char *function
                vaf.fmt = fmt;
                vaf.va = &args;
 
-               printk(KERN_CRIT
-                       "BTRFS: error (device %s) in %s:%d: errno=%d %s 
(%pV)\n",
+               pr_crit("BTRFS: error (device %s) in %s:%d: errno=%d %s 
(%pV)\n",
                        sb->s_id, function, line, errno, errstr, &vaf);
                va_end(args);
        } else {
-               printk(KERN_CRIT "BTRFS: error (device %s) in %s:%d: errno=%d 
%s\n",
+               pr_crit("BTRFS: error (device %s) in %s:%d: errno=%d %s\n",
                        sb->s_id, function, line, errno, errstr);
        }
 #endif
@@ -925,8 +924,7 @@ static int btrfs_parse_early_options(const char *options, 
fmode_t flags,
                        }
                        break;
                case Opt_subvolrootid:
-                       printk(KERN_WARNING
-                               "BTRFS: 'subvolrootid' mount option is 
deprecated and has no effect\n");
+                       pr_warn("BTRFS: 'subvolrootid' mount option is 
deprecated and has no effect\n");
                        break;
                case Opt_device:
                        device_name = match_strdup(&args[0]);
@@ -1150,7 +1148,7 @@ static int btrfs_fill_super(struct super_block *sb,
        sb->s_iflags |= SB_I_CGROUPWB;
        err = open_ctree(sb, fs_devices, (char *)data);
        if (err) {
-               printk(KERN_ERR "BTRFS: open_ctree failed\n");
+               pr_err("BTRFS: open_ctree failed\n");
                return err;
        }
 
@@ -2356,7 +2354,7 @@ static void btrfs_interface_exit(void)
 
 static void btrfs_print_mod_info(void)
 {
-       printk(KERN_INFO "Btrfs loaded, crc32c=%s"
+       pr_info("Btrfs loaded, crc32c=%s"
 #ifdef CONFIG_BTRFS_DEBUG
                        ", debug=on"
 #endif
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index e5ddfba..0dbf81f 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -77,7 +77,7 @@ static int can_modify_feature(struct btrfs_feature_attr *fa)
                clear = BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR;
                break;
        default:
-               printk(KERN_WARNING "btrfs: sysfs: unknown feature set %d\n",
+               pr_warn("btrfs: sysfs: unknown feature set %d\n",
                                fa->feature_set);
                return 0;
        }
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 7a441c8..5478f50 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -65,7 +65,7 @@ void btrfs_put_transaction(struct btrfs_transaction 
*transaction)
                BUG_ON(!list_empty(&transaction->list));
                WARN_ON(!RB_EMPTY_ROOT(&transaction->delayed_refs.href_root));
                if (transaction->delayed_refs.pending_csums)
-                       printk(KERN_ERR "pending csums is %llu\n",
+                       pr_err("pending csums is %llu\n",
                               transaction->delayed_refs.pending_csums);
                while (!list_empty(&transaction->pending_chunks)) {
                        struct extent_map *em;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index dda23b7..89c499e 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1140,12 +1140,12 @@ int btrfs_scan_one_device(const char *path, fmode_t 
flags, void *holder,
        ret = device_list_add(path, disk_super, devid, fs_devices_ret);
        if (ret > 0) {
                if (disk_super->label[0]) {
-                       printk(KERN_INFO "BTRFS: device label %s ", 
disk_super->label);
+                       pr_info("BTRFS: device label %s ", disk_super->label);
                } else {
-                       printk(KERN_INFO "BTRFS: device fsid %pU ", 
disk_super->fsid);
+                       pr_info("BTRFS: device fsid %pU ", disk_super->fsid);
                }
 
-               printk(KERN_CONT "devid %llu transid %llu %s\n", devid, 
transid, path);
+               pr_cont("devid %llu transid %llu %s\n", devid, transid, path);
                ret = 0;
        }
        if (!ret && fs_devices_ret)
@@ -5911,13 +5911,13 @@ int btrfs_rmap_block(struct btrfs_mapping_tree 
*map_tree,
        read_unlock(&em_tree->lock);
 
        if (!em) {
-               printk(KERN_ERR "BTRFS: couldn't find em for chunk %Lu\n",
+               pr_err("BTRFS: couldn't find em for chunk %Lu\n",
                       chunk_start);
                return -EIO;
        }
 
        if (em->start != chunk_start) {
-               printk(KERN_ERR "BTRFS: bad chunk start, em=%Lu, wanted=%Lu\n",
+               pr_err("BTRFS: bad chunk start, em=%Lu, wanted=%Lu\n",
                       em->start, chunk_start);
                free_extent_map(em);
                return -EIO;
@@ -6719,8 +6719,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
 
                        num_stripes = btrfs_chunk_num_stripes(sb, chunk);
                        if (!num_stripes) {
-                               printk(KERN_ERR
-           "BTRFS: invalid number of stripes %u in sys_array at offset %u\n",
+                               pr_err("BTRFS: invalid number of stripes %u in 
sys_array at offset %u\n",
                                        num_stripes, cur_offset);
                                ret = -EIO;
                                break;
@@ -6743,8 +6742,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
                        if (ret)
                                break;
                } else {
-                       printk(KERN_ERR
-               "BTRFS: unexpected item type %u in sys_array at offset %u\n",
+                       pr_err("BTRFS: unexpected item type %u in sys_array at 
offset %u\n",
                                (u32)key.type, cur_offset);
                        ret = -EIO;
                        break;
@@ -6758,7 +6756,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
        return ret;
 
 out_short_read:
-       printk(KERN_ERR "BTRFS: sys_array too short to read %u bytes at offset 
%u\n",
+       pr_err("BTRFS: sys_array too short to read %u bytes at offset %u\n",
                        len, cur_offset);
        clear_extent_buffer_uptodate(sb);
        free_extent_buffer_stale(sb);
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index 88d274e..441b81a 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -95,7 +95,7 @@ static int zlib_compress_pages(struct list_head *ws,
        *total_in = 0;
 
        if (Z_OK != zlib_deflateInit(&workspace->strm, 3)) {
-               printk(KERN_WARNING "BTRFS: deflateInit failed\n");
+               pr_warn("BTRFS: deflateInit failed\n");
                ret = -EIO;
                goto out;
        }
@@ -123,7 +123,7 @@ static int zlib_compress_pages(struct list_head *ws,
        while (workspace->strm.total_in < len) {
                ret = zlib_deflate(&workspace->strm, Z_SYNC_FLUSH);
                if (ret != Z_OK) {
-                       printk(KERN_DEBUG "BTRFS: deflate in loop returned 
%d\n",
+                       pr_debug("BTRFS: deflate in loop returned %d\n",
                               ret);
                        zlib_deflateEnd(&workspace->strm);
                        ret = -EIO;
@@ -249,7 +249,7 @@ static int zlib_decompress_biovec(struct list_head *ws, 
struct page **pages_in,
        }
 
        if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
-               printk(KERN_WARNING "BTRFS: inflateInit failed\n");
+               pr_warn("BTRFS: inflateInit failed\n");
                return -EIO;
        }
        while (workspace->strm.total_in < srclen) {
@@ -339,7 +339,7 @@ static int zlib_decompress(struct list_head *ws, unsigned 
char *data_in,
        }
 
        if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
-               printk(KERN_WARNING "BTRFS: inflateInit failed\n");
+               pr_warn("BTRFS: inflateInit failed\n");
                return -EIO;
        }
 
-- 
2.7.1

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