fs/bfs: use bfs prefix for dump_imap

All bfs related functions use bfs_ prefix. This patch also moves extern
declaration to bfs.h and removes prototype from inode.c

This fixes checkpatch warning:

WARNING: externs should be avoided in .c files

Signed-off-by: Fabian Frederick <[e-mail]>
Cc: "Tigran A. Aivazian" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/bfs/bfs.h

···
 
 /* inode.c */
 extern struct inode *bfs_iget(struct super_block *sb, unsigned long ino);
+extern void bfs_dump_imap(const char *, struct super_block *);
 
 /* file.c */
 extern const struct inode_operations bfs_file_inops;

fs/bfs/dir.c

···
 	.llseek		= generic_file_llseek,
 };
 
-extern void dump_imap(const char *, struct super_block *);
-
 static int bfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 						bool excl)
 {
···
 	BFS_I(inode)->i_eblock = 0;
 	insert_inode_hash(inode);
         mark_inode_dirty(inode);
-	dump_imap("create", s);
+	bfs_dump_imap("create", s);
 
 	err = bfs_add_entry(dir, dentry->d_name.name, dentry->d_name.len,
 							inode->i_ino);

fs/bfs/inode.c

···
 #define dprintf(x...)
 #endif
 
-void dump_imap(const char *prefix, struct super_block *s);
-
 struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
 {
 	struct bfs_inode *di;
···
 			info->si_freeb += bi->i_eblock + 1 - bi->i_sblock;
 		info->si_freei++;
 		clear_bit(ino, info->si_imap);
-		dump_imap("delete_inode", s);
+		bfs_dump_imap("delete_inode", s);
         }
 
 	/*
···
 	.statfs		= bfs_statfs,
 };
 
-void dump_imap(const char *prefix, struct super_block *s)
+void bfs_dump_imap(const char *prefix, struct super_block *s)
 {
 #ifdef DEBUG
 	int i;
···
 	}
 	brelse(bh);
 	brelse(sbh);
-	dump_imap("read_super", s);
+	bfs_dump_imap("read_super", s);
 	return 0;
 
 out3: