Re: [RFC] mm - background_writeout exits when pages_skipped ?

2007-10-14 Thread Fengguang Wu
On Thu, Oct 11, 2007 at 06:19:34PM +0100, richard kennedy wrote: > When background_writeout() (mm/page-writeback.c) finds any pages_skipped > in writeback_inodes() and it didn't meet any congestion, it exits even > when it hasn't written enough pages yet. > > Performing 2 ( or more) concurrent cop

[RFC] mm - background_writeout exits when pages_skipped ?

2007-10-11 Thread richard kennedy
When background_writeout() (mm/page-writeback.c) finds any pages_skipped in writeback_inodes() and it didn't meet any congestion, it exits even when it hasn't written enough pages yet. Performing 2 ( or more) concurrent copies of a large file, often creates lots of skipped pages (1000+) making bac