Re: [PATCH 2/7] writeback: switch to per-bdi threads for flushing data

Christoph Hellwig
2009-03-16T13:39:40Z

On Mon, Mar 16, 2009 at 09:30:14AM -0400, Chris Mason wrote:
> Some of our poor filesystem cousins don't write the super until kupdate
> kicks them (see ext2_write_super). kupdate has always been the periodic
> FS thread of last resort.

Yikes, looks like this is indeed the only peridocial sb update for many
simpler filesystems. We should really have a separate thread for that
instead of hacking it into VM writeback. Especially with the per-bdi
one where the current setup doesn't make any sense.