Re: TAKE - reduce synchronous transaction use in xfs

[Andi Kleen <ak@suse.de>]

[...]

Thanks for the explanation. It feels better now that I know why it is 
slow :-)

> 
> The other thing which seems to help a lot is the change I just put in
> pagebuf today. XFS metadata was getting pushed out of cache too easily
> and we ended up rereading a lot. This change on my box can make the
> removal of a kernel tree drop from 10 seconds to 5 seconds, but will
> not make a difference if you are removing stuff which has not been
> accessed recently.

Hmm, I may consider pulling that into my kernel then if it is a low risk
change. 

-Andi