> Hi. I have a question about ext4_free_blocks() behavior for per-file data journaling
> mode. AFAIUI, in ext4_free_blocks(), it doesn't invoke ext4_forget() function for
> data blocks of a per-file data journaling enabled file, because all the data blocks
> of the file are not linked to the block device's address space of the file, but the
> address space of the inode of the file, so any data blocks of the file cannot be
> found by sb_find_get_block() function. It seems a bug, but I am not sure.
> Is this a problem?
I just answer my own question. It was a silly question, because all the data buffers
of per-file data journalled file are forgotten by jbd2_journal_invalidatepage() in advance
of invoking ext4_free_blocks().
Anyway, the revoke operation to the data blocks is still missing in ext4_free_blocks().
I will fix this problem. :-)
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