Re: [RFC PATCHv5 0/6] zram: introduce writeback bio batching

[Sergey Senozhatsky]

On (25/11/22 20:24), Gao Xiang wrote:
> zram(ext4) means zram device itself is formated as ext4.
> 
> > 
> > > zram(ext4) -> backing ext4/btrfs
> > 
> > This is not a valid configuration, as far as I'm concerned.
> > Unless I'm missing your point.
> 
> Why it's not valid? zram can be used as a regular virtual
> block device, and format with any fs, and mount the zram
> then.

I thought you were talking about the backing device being
ext4/btrfs.  Sorry, I don't have enough context/knowledge
to understand what you're getting at.  zram has been doing
writeback for ages, I really don't know what you mean by
"to act like this".