1 files changed, 5 insertions, 1 deletions

diff --git a/mm/nommu.c b/mm/nommu.c
index ce74452c02d9..fd4e8df0f02d 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1167,7 +1167,11 @@ int __vm_enough_memory(long pages, int cap_sys_admin)
            leave 3% of the size of this process for other processes */
         allowed -= current->mm->total_vm / 32;
 
-        if (atomic_read(&vm_committed_space) < allowed)
+        /*
+         * cast `allowed' as a signed long because vm_committed_space
+         * sometimes has a negative value
+         */
+        if (atomic_read(&vm_committed_space) < (long)allowed)
                 return 0;
 
         vm_unacct_memory(pages);