This adds debug for vm_committed_as under CONFIG_DEBUG_VM=y Signed-off-by: Konstantin Khlebnikov <khlebni...@openvz.org> --- mm/mmap.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/mm/mmap.c b/mm/mmap.c index 9d54851..2c7e6aa 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -131,6 +131,12 @@ int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin) vm_acct_memory(pages); +#ifdef CONFIG_DEBUG_VM + WARN_ONCE(percpu_counter_read(&vm_committed_as) < + -(s64)vm_committed_as_batch * num_online_cpus(), + "memory commitment underflow"); +#endif + /* * Sometimes we want to use more memory than we have */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/