qnx6: Convert qnx6_find_entry() to qnx6_find_ino()

It's hard to return a directory entry from qnx6_find_entry()
because it might be a long dir_entry with a different format.
So stick with the convention of returning an inode number,
but rename it to qnx6_find_ino() to reflect what it actually does,
and move the call to qnx6_put_page() inside the function which
lets us get rid of the res_page parameter.

Reviewed-by: Josef Bacik <[e-mail]>
Signed-off-by: Matthew Wilcox (Oracle) <[e-mail]>
Signed-off-by: Christian Brauner <[e-mail]>

fs/qnx6/dir.c

···
 }
 
 
-unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
-			 struct page **res_page)
+unsigned qnx6_find_ino(int len, struct inode *dir, const char *name)
 {
 	struct super_block *s = dir->i_sb;
 	struct qnx6_inode_info *ei = QNX6_I(dir);
···
 	unsigned ino;
 	struct qnx6_dir_entry *de;
 	struct qnx6_long_dir_entry *lde;
-
-	*res_page = NULL;
 
 	if (npages == 0)
 		return 0;
···
 	return 0;
 
 found:
-	*res_page = &folio->page;
 	ei->i_dir_start_lookup = n;
+	qnx6_put_page(&folio->page);
 	return ino;
 }
 

fs/qnx6/namei.c

···
 				unsigned int flags)
 {
 	unsigned ino;
-	struct page *page;
 	struct inode *foundinode = NULL;
 	const char *name = dentry->d_name.name;
 	int len = dentry->d_name.len;
···
 	if (len > QNX6_LONG_NAME_MAX)
 		return ERR_PTR(-ENAMETOOLONG);
 
-	ino = qnx6_find_entry(len, dir, name, &page);
+	ino = qnx6_find_ino(len, dir, name);
 	if (ino) {
 		foundinode = qnx6_iget(dir->i_sb, ino);
-		qnx6_put_page(page);
 		if (IS_ERR(foundinode))
 			pr_debug("lookup->iget ->  error %ld\n",
 				 PTR_ERR(foundinode));

fs/qnx6/qnx6.h

···
 	put_page(page);
 }
 
-extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
-				struct page **res_page);
+unsigned qnx6_find_ino(int len, struct inode *dir, const char *name);