[patch] bugfix for kdb

[Tigran Aivazian <tigran@xxxxxxxxxxx>]

hi,

Rather obvious bugfix. Against kdb v1.3.

Regards,
Tigran

--- vmalloc.c.0 Thu Aug 17 20:12:20 2000
+++ vmalloc.c   Thu Aug 17 20:12:40 2000
@@ -39,6 +39,7 @@
 {
        struct vm_struct *vp;
 
+       read_lock(&vmlist_lock);
        for(vp=vmlist; vp; vp = vp->next) {
                unsigned long end = (unsigned long)vp->addr + vp->size;
 
@@ -47,9 +48,11 @@
                if ((starta >= (unsigned long)vp->addr)
                 && (starta < end)
                 && (enda < end)) {
+                       read_unlock(&vmlist_lock);
                        return 1;
                }
        }
+       read_unlock(&vmlist_lock);
        return 0;
 }
 #endif