On 3/18/21 1:07 AM, Sungjong Seo wrote:
  /*
- * return values:
- *   >= 0   : return dir entiry position with the name in dir
- *   -ENOENT   : entry with the name does not exist
- *   -EIO      : I/O error
+ * @ei:         inode info of directory
+ * @p_dir:      input as directory structure in which we search name
+ *              if found, output as a cluster dir where the name exists
+ *              if not found, not changed from input
+ * @num_entries entry size of p_uniname
+ * @return:
+ *   >= 0:      dir entry position from output p_dir.dir
+ *   -ENOENT:   entry with the name does not exist
+ *   -EIO:      I/O error
   */
  int exfat_find_dir_entry(struct super_block *sb, struct exfat_inode_info
*ei,
                struct exfat_chain *p_dir, struct exfat_uni_name *p_uniname,
@@ -925,14 +930,16 @@ int exfat_find_dir_entry(struct super_block *sb,
struct exfat_inode_info *ei,
[snip]
                        hint_stat->clu = p_dir->dir;
                        hint_stat->eidx = 0;
-                       return (dentry - num_ext);
+
+                       exfat_chain_dup(p_dir, &tmp_clu);
+                       return dentry_in_cluster;
                }
        }

        hint_stat->clu = clu.dir;
        hint_stat->eidx = dentry + 1;
-       return dentry - num_ext;
+
+       exfat_chain_dup(p_dir, &tmp_clu);
+       return dentry_in_cluster;
  }
Changing the functionality of exfat find_dir_entry() will affect
exfat_find() and exfat_lookup(), breaking the concept of ei->dir.dir
which should have the starting cluster of its parent directory.

Well, is there any missing patch related to exfat_find()?
It would be nice to modify the caller of this function, exfat_find(),
so that this change in functionality doesn't affect other functions.

Thanks.

Whoops, it's a bug. I didn't catch that, thanks.
Maybe it could make exfat inode hash problem.
I wanted to reuse current function interface but, it would be better
to add an addtional parameter. I'll fix this in v2.


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