On Sun, 9 May 2010, Linus Torvalds wrote: > > IOW, a patch like this (this is a pseudo-patch, totally untested, won't > compile, yadda yadda - you need to actually make the people who call > "move_page_tables()" call that prepare function first etc etc) Btw, that pseudo-patch is also likely the least efficient way to do this, since it re-walks the page directories for each pmd it creates. Also - the thing is, we can easily choose to do this _just_ for the case of shifting argument pages, which really is a special case (the generic case of "mremap()" is a lot more complicated, and doesn't have the issue with rmap because it's doing all the "new vma" setup etc). Linus -- 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>