2.4.13-ac8

 kernel

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla/kernel/fork.c linux.ac/kernel/fork.c
--- linux.vanilla/kernel/fork.c   Tue Sep 18 05:46:04 2001
+++ linux.ac/kernel/fork.c   Wed Oct 10 01:48:37 2001
@@ -133,6 +133,7 @@
    flush_cache_mm(current->mm);
    mm->locked_vm = 0;
    mm->mmap = NULL;
+   mm->mmap_avl = NULL;
    mm->mmap_cache = NULL;
    mm->map_count = 0;
    mm->rss = 0;
@@ -199,7 +200,8 @@
          goto fail_nomem;
    }
    retval = 0;
-   build_mmap_rb(mm);
+   if (mm->map_count >= AVL_MIN_MAP_COUNT)
+      build_mmap_avl(mm);
 
 fail_nomem:
    flush_tlb_mm(current->mm);
@@ -585,7 +587,14 @@
    *p = *current;
 
    retval = -EAGAIN;
-   if (atomic_read(&p->user->processes) >= p->rlim[RLIMIT_NPROC].rlim_cur)
+   /*
+    * Check if we are over our maximum process limit, but be sure to
+    * exclude root. This is needed to make it possible for login and
+    * friends to set the per-user process limit to something lower
+    * than the amount of processes root is running. -- Rik
+    */
+   if (atomic_read(&p->user->processes) >= p->rlim[RLIMIT_NPROC].rlim_cur
+                 && !capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE))
       goto bad_fork_free;
 
    atomic_inc(&p->user->__count);
@@ -649,8 +658,6 @@
    p->lock_depth = -1;      /* -1 = no lock */
    p->start_time = jiffies;
 
-   INIT_LIST_HEAD(&p->local_pages);
-
    retval = -ENOMEM;
    /* copy all the process information */
    if (copy_files(clone_flags, p))
@@ -703,7 +710,7 @@
    /* CLONE_PARENT and CLONE_THREAD re-use the old parent */
    p->p_opptr = current->p_opptr;
    p->p_pptr = current->p_pptr;
-   if (!(clone_flags & (CLONE_PARENT | CLONE_THREAD))) {
+   if (!(clone_flags & CLONE_PARENT)) {
       p->p_opptr = current;
       if (!(p->ptrace & PT_PTRACED))
          p->p_pptr = current;