Re: msync() behaviour broken for MS_ASYNC, revert patch?

[Linus Torvalds]

On Fri, 10 Feb 2006, Andrew Morton wrote:
> 
> Yes, it would make sense to run balance_dirty_pages_ratelimited() inside
> msync_pte_range().  So pdflush will get poked if we hit
> background_dirty_ratio threshold, or we go into caller-initiated writeout
> if we hit dirty_ratio.
> 
> But it's not completely trivial, because I don't think we want to be doing
> blocking writeback with mmap_sem held.

Why not just do it once, at the end? 

		Linus
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