Re: [PATCH 2/6] writeback: introduce writeback_control.inodes_cleaned

[Christoph Hellwig]

On Wed, May 04, 2011 at 07:11:30PM +0800, Wu Fengguang wrote:
> On Wed, May 04, 2011 at 07:05:00PM +0800, Christoph Hellwig wrote:
> > Same here - this has nothing to do with actual page writeback and really
> > should stay internal to fs/fs-writeback.c
> 
> OK, I'll check how to constrain writeback_control to the minimal scope.

The basic idea would be to pass the struct wb_writeback_work all the
way down to writeback_sb_inodes, and initialize the struct writeback_control
there.  This requires adding a few more fields like more_io and
older_than_this to struct wb_writeback_work, and redoing a lot of the
tracing, but it immediately clean things up, e.g. suddently
wbc.nr_to_write vs work->nr_pages starts to make sense, and instead
of saving and restoring pages_skipped in writeback_sb_inodes it can
always start with a clean zero value.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/