X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmmap.c;h=404319477e71d61679166bc954ed246719affe89;hb=0abf40c1ac3f25d264c019e1cfe155d590defb87;hp=da3fa90a0aae2b9af04ec553209deb6a51b80b48;hpb=8b0ee07e108b2eefdab5bb73f33223f18926c3b2;p=linux-2.6

diff --git a/mm/mmap.c b/mm/mmap.c
index da3fa90a0a..404319477e 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -143,7 +143,11 @@ 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);