On Wed, 28 Dec 2011 16:26:02 -0800 (PST) Hugh Dickins <hughd@xxxxxxxxxx> wrote: > If DEBUG_VM, mem_cgroup_print_bad_page() is called whenever bad_page() > shows a "Bad page state" message, removes page from circulation, adds a > taint and continues. This is at a very low level, often when a spinlock > is held (sometimes when page table lock is held, for example). > > We want to recover from this badness, not make it worse: we must not > kmalloc memory here, we must not do a cgroup path lookup via dubious > pointers. No doubt that code was useful to debug a particular case > at one time, and may be again, but take it out of the mainline kernel. > > Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>