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

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

One side effect is that anything that was KERN_DEBUG is now automatically
a dynamic debug message.
Signed-off-by: NJeff Mahoney <jeffm@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

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 @@ static struct list_head *find_workspace(int type)
 					/* 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;

fs/btrfs/ctree.c

@@ -4791,7 +4791,7 @@ 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);

fs/btrfs/ctree.h

@@ -1435,13 +1435,13 @@ 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),			\
@@ -3358,7 +3358,7 @@ 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...) \

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;
 	}
@@ -4114,24 +4114,24 @@ 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;
 	}
@@ -4142,22 +4142,22 @@ 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;
@@ -4165,23 +4165,23 @@ 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;
 	}
@@ -4201,15 +4201,15 @@ 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;
 	}
@@ -4219,14 +4219,14 @@ 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));
@@ -4238,13 +4238,11 @@ 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;

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]" : "");

fs/btrfs/extent_io.c

@@ -75,7 +75,7 @@ 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);
@@ -460,7 +460,7 @@ 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;
 	}

fs/btrfs/free-space-cache.c

@@ -2346,7 +2346,7 @@ int __btrfs_add_free_space(struct btrfs_free_space_ctl *ctl,
 	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);
 	}
 

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 @@ static int lzo_decompress_biovec(struct list_head *ws,
 		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;
 	}

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));
 	}

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);

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

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;
 	}

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;

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)
@@ -5907,13 +5907,13 @@ 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;
@@ -6715,8 +6715,7 @@ 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;
@@ -6739,8 +6738,7 @@ 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;
@@ -6754,7 +6752,7 @@ 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);

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;
 	}