Re: [PATCH v2 3/4] exfat: dirty all new pages when extending valid_size

[Namjae Jeon]

> @@ -664,90 +664,30 @@ int exfat_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
>  static int exfat_zero_new_range(struct inode *inode, loff_t start, loff_t end)
Function name and comments no longer seem to match. What do you think
about changing them like this?

/*
 * exfat_prepare_valid_range - populate and dirty folios covering [start, end)
 *
 * Populate missing blocks via the read path, which zero-fills data
 * beyond the current valid_size while preserving uptodate blocks.
 * Mark entire folios dirty so the newly valid range is written back.
 *
 * Call before advancing valid_size.
 */

And generic/538 test fails with this patch set. Please check if this
test failure is reproducible for you as well.
Thanks.