On 07/28, Chao Yu wrote:

On 2019-7-24 7:05, Daniel Rosenberg via Linux-f2fs-devel wrote:

quoted

 /* Flags that are appropriate for regular files (all but dir-specific ones). */
 #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL))

We missed to add F2FS_CASEFOLD_FL here to exclude it in F2FS_REG_FLMASK.

Applied.

quoted

@@ -1660,7 +1660,16 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
 		return -EPERM;
 
 	oldflags = fi->i_flags;
+	if ((iflags ^ oldflags) & F2FS_CASEFOLD_FL) {
+		if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
+			return -EOPNOTSUPP;
+
+		if (!S_ISDIR(inode->i_mode))
+			return -ENOTDIR;
 
+		if (!f2fs_empty_dir(inode))
+			return -ENOTEMPTY;
+	}

Modified like this:

@@ -1665,6 +1665,13 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
        if (IS_NOQUOTA(inode))
                return -EPERM;

+       if ((iflags ^ fi->i_flags) & F2FS_CASEFOLD_FL) {
+               if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
+                       return -EOPNOTSUPP;
+               if (!f2fs_empty_dir(inode))
+                       return -ENOTEMPTY;
+       }
+

Note that, directory is checked by above change.

I've uploaded in f2fs.git, so could you check it out and test a bit?

Thanks,

I applied the patches based on last Jaegeuk's dev branch, it seems we needs to
adjust above code a bit. Otherwise it looks good to me.

BTW, it looks the patchset works fine with generic/556 testcase.

Thanks,