autofs4: kill ->size in autofs_info

It's used only to pass the length of symlink body to
autofs4_get_inode() in autofs4_dir_symlink().  We can
bloody well set inode->i_size in autofs4_dir_symlink()
directly and be done with that.
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/autofs4/autofs_i.h

@@ -88,8 +88,6 @@ struct autofs_info {
 
 	uid_t uid;
 	gid_t gid;
-
-	size_t	size;
 };
 
 #define AUTOFS_INF_EXPIRING	(1<<0) /* dentry is in the process of expiring */

fs/autofs4/inode.c

@@ -38,7 +38,6 @@ struct autofs_info *autofs4_init_ino(struct autofs_info *ino,
 	if (!reinit) {
 		ino->flags = 0;
 		ino->dentry = NULL;
-		ino->size = 0;
 		INIT_LIST_HEAD(&ino->active);
 		ino->active_count = 0;
 		INIT_LIST_HEAD(&ino->expiring);
@@ -365,7 +364,6 @@ struct inode *autofs4_get_inode(struct super_block *sb,
 		inode->i_op = &autofs4_dir_inode_operations;
 		inode->i_fop = &autofs4_dir_operations;
 	} else if (S_ISLNK(mode)) {
-		inode->i_size = inf->size;
 		inode->i_op = &autofs4_symlink_inode_operations;
 	}
 

fs/autofs4/root.c

@@ -530,6 +530,7 @@ static int autofs4_dir_symlink(struct inode *dir,
 	struct autofs_info *ino = autofs4_dentry_ino(dentry);
 	struct autofs_info *p_ino;
 	struct inode *inode;
+	size_t size = strlen(symname);
 	char *cp;
 
 	DPRINTK("%s <- %.*s", symname,
@@ -544,8 +545,7 @@ static int autofs4_dir_symlink(struct inode *dir,
 
 	autofs4_del_active(dentry);
 
-	ino->size = strlen(symname);
-	cp = kmalloc(ino->size + 1, GFP_KERNEL);
+	cp = kmalloc(size + 1, GFP_KERNEL);
 	if (!cp) {
 		if (!dentry->d_fsdata)
 			kfree(ino);
@@ -562,6 +562,7 @@ static int autofs4_dir_symlink(struct inode *dir,
 		return -ENOMEM;
 	}
 	inode->i_private = cp;
+	inode->i_size = size;
 	d_add(dentry, inode);
 
 	dentry->d_fsdata = ino;