On Wed, 7 Jul 2010 19:43:16 -0400 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > There's also free_more_memory() and do_try_to_free_pages(). > > Indeed. So we still have some special cases that want a specific > number to be written back globally. It could be that those two callsites can be changed to NotDoThat. I do suggest that you dig through the git record and perhaps the email archives to work out the thinking - that's old code. Perhaps we could change things to write back down to the dirty limits, but that might cause subtle breakage in low-memory situations where dirty memory is uneven between zones, dunno. Writing back the whole world would surely be a safe substitute, but might be inefficient. I doubt if a whole lot of rigourous thinking went into either one... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>