On Wed, Oct 18, 2023 at 09:25:18AM -0300, Wedson Almeida Filho wrote:
> + fn read_folio(inode: &INode<Self>, mut folio: LockedFolio<'_>) -> Result {
> + let pos = u64::try_from(folio.pos()).unwrap_or(u64::MAX);
> + let size = u64::try_from(inode.size())?;
> + let sb = inode.super_block();
> +
> + let copied = if pos >= size {
> + 0
> + } else {
> + let offset = inode.data().offset.checked_add(pos).ok_or(ERANGE)?;
> + let len = core::cmp::min(size - pos, folio.size().try_into()?);
> + let mut foffset = 0;
> +
> + if offset.checked_add(len).ok_or(ERANGE)? > sb.data().data_size {
> + return Err(EIO);
> + }
> +
> + for v in sb.read(offset, len)? {
> + let v = v?;
> + folio.write(foffset, v.data())?;
> + foffset += v.data().len();
> + }
> + foffset
> + };
> +
> + folio.zero_out(copied, folio.size() - copied)?;
> + folio.mark_uptodate();
> + folio.flush_dcache();
> +
> + Ok(())
> + }
Who unlocks the folio here?
